Single Aluminum Block - 51mm Sheave Single block with anodized aluminum cheeks. Delrin™ sheave ensures smooth operation with high safe working load. Swivel head may be locked in place to avoid twist.  Specifications: Sheave Dia. 2" (51mm) Thickness 15/16" (24mm) Width 2 1/8" (54mm) Length 4 13/32" (112mm) SWL 1750 lbs. (795kg) Weight 5oz. (142g) Max. Line size 7/16" (11mm) 

Single Aluminum Block - 60mm Sheave Delrin™ sheave ensures smooth operation and a high safe working load. Swivel head may be locked in place to eliminate twisting.  Specifications: Sheave Diameter 2 3/8" (60mm) Thickness 1 3/32" (28mm) Width 2 1/2" (64mm) Length 5 1/32" (128mm) SWL 2250 lbs. (1020kg) Weight 7.4oz (210g) Max Line size 1/2" (13mm) 

Single Stainless Steel Block - 51mm Sheave Single block with stainless steel cheeks. Delrin™ sheave ensures smooth operation and high safe working load.  Specifications: Sheave Dia. 2" (51mm) Thickness 15/16" (24mm) Width 2 1/8" (54mm) Length 4 13/32" (112mm) SWL 1750 lbs. (795kg) Weight 7.1oz (201g) Max Line 7/16" (11mm) 

Series 75 Core Block™ - Single - Aluminum Rope/Wire Sheave Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Universal Bearing Dynamic and high static load performance The Ronstan Universal Bearing incorporates our proven 2-stage bearing system Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction. Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance. Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks. Alloy Cheek Plates Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear. Universal head The head assembly incorporates a brass bearing washer to provide smooth 360™ rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0™ or 90™. Shackles are high quality forged grade 316 stainless steel. Features: Class leading performance and sleek, contemporary styling Excellent dynamic and high static load performance Less than half the friction of the nearest competitor Universal head with full 3-axis articulation Head posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex/Allen Key Central hub hole can be used as a becket take-off or tie-up point Durable alloy Rope/Wire sheave Applications: Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 14M (46') Various control line applications on larger yachts Aluminium sheave which has a deep groove profile specifically made for use with wire Materials: Sheave: U.V. stabilized Acetal Cheek body: Aluminium Alloy Ball Bearings: High compression strength carbon black Acetal Shackle, head post & hub: Grade 316 stainless steel Specifications: Sheave Ø: 75mm(3") Max. Rope Ø: 14mm(9/16") Max. Cable Ø: 8mm(5/16") Pin Ø: 8mm(5/16") M.W.L.: 1,500kg(3,300lbs) B. L.: 3,000kg(6,600lbs) Weight: 432g(15.3oz)

Stand-Up Swivel - Aluminum Block Specifications: Sheave Dia. 2-2/8" (60 mm) Max Line 1/2" (13 mm) Diameter includes urethane base 3-3/8" (86 mm) Height 4-25/32" (120 mm) H2 2-15/32" (63 mm) Fastener Size (4),1/4" RH (6 mm) C/C 1-11/16" (43 mm) SWL 2250 lbs (1020 kg) Weight Alum. 11.7 oz. (332 g) 

Snatch Block Acetal Sheave - Single - 11mm(7/16") Max. Rope Diameter Snatch blocks are a tough and reliable solution for temporary leads and line deflection. Simple and quick to deploy, they can be easily opened when the load is released. The standard snap shackle head allows the block to swivel through 360°. Soft resilient cheeks reduce clatter and protect gelcoat and painted surfaces. Attachment point provided for shock cord hanger. Features: Easily operated latch mechanism Lightweight Soft resilient cheeks Applications: Temporary sheeting point while changing sheets for boats up to 10M (33') Temporary reefing block for boats up to 10M (33') Spare or replacement block for general use on larger boats depending on line angle and load Materials: U.V. stabilized Acetal sheaves Grade 316 stainless steel frame and load strap Soft thermoplastic rubber cheeks Investment cast Grade 15-5PH stainless steel snap shackle Specifications: Sheave Ø: 51mm(2") Max. Rope Ø: 12mm(1/2") M.W.L.: 500kg(1,100lbs) B.L.: 1,000kg(2,200lbs) Weight: 250g(8.8oz)

Series 7 Flat Base/Aluminum Cheek/Delrin Sheave Delrin™ sheave ensures smooth operation and high safe working load. Stainless steel base distributes loads to a large surface area.  Specifications: Sheave Dia. 2-3/8" (60 mm) Max. Line 1/2" (13 mm) Length 4-3/8" (111 mm) Width  2-3/4" (70 mm) Height 1" (25 mm) Fasteners (4) 1/4" RH (6 mm) C/C 3-5/8" (92 mm) C/C (wide end) 2" (51mm) C/C (narrow end) 1-9/16" SWL 2250 lbs. (1020 kg) Weight Alum. 9.6 oz. (272 g) 

Single Stainless Steel Block - 60mm Sheave Delrin™ sheave ensures low-friction and high safe working load. Swivel head may be locked in place to eliminate line twist.  Specifications: Sheave Dia. 2 3/8" (60mm) Thickness 1 3/32" (28mm) Width 2 1/2" (64mm) Length 5 1/32" (128mm) SWL 2250 lbs. (1020kg) Weight 10.2oz (289g) Max. Line 1/2" (13mm) 

Series 40 Orbit Single BB Block with Cleat & Swivel The Series 40 ball-bearing Orbit Blocks™ provides the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fiber reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is highly versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans. Series 40 Orbit Blocks™ are fitted with our carbon-reinforced C-Cleat™ for secure rope holding with low entry and exit efforts, and fairleads for fast action from any angle. Cleat arms are made from stainless steel and adjustable for setting your preferred cleating angle. Ball Bearing versions incorporate our 2-stage bearing system using ball bearings to minimize friction and a secondary full-contact bearing to maintain low friction across the full working load range. High Load versions are designed specifically for any application where high dynamic or static loads are expected. They feature a high-strength grade 2205 stainless steel sheave & hub together with a triple bearing race to maintain low friction at very high loads. Features: Class-leading dynamic and static load ratings Lightweight, yet strong. Toughened, glass fiber reinforced nylon replaces stainless steel straps used in our traditional utility blocks Low friction 2-stage ball bearing system for efficient and effortless trimming Soft attachment, lashing, and traditional swivel shackle head options Low profile and compact High performance cleating Applications Mainsheet systems and spinnaker sheets on dinghies, off-the-beach catamarans and sportsboats to 8m (26ft) Halyard, vang and backstay applications on boats to 9m (30ft) Control line applications on larger yachts Specifications: Sheave Ø: 1-9/16 in. Max. Rope Ø: 3/8 in. Pin Ø: 5/32" M.W.L.: 880 lb. B. L.: 1760 lb. Weight: 6.2 oz.

Snatch Block Acetal Sheave - Single - 12mm(1/2") Max. Rope Diameter Snatch blocks are a tough and reliable solution for temporary leads and line deflection. Simple and quick to deploy, they can be easily opened when the load is released. The standard snap shackle head allows the block to swivel through 360°. Soft resilient cheeks reduce clatter and protect gelcoat and painted surfaces. Attachment point provided for shock cord hanger. Features: Easily operated latch mechanism Lightweight Soft resilient cheeks Applications: Temporary sheeting point while changing sheets for boats up to 10M (33') Temporary reefing block for boats up to 10M (33') Spare or replacement block for general use on larger boats depending on line angle and load Materials: U.V. stabilized Acetal sheaves Grade 316 stainless steel frame and load strap Soft thermoplastic rubber cheeks Investment cast Grade 15-5PH stainless steel snap shackle Specifications: Sheave Ø: 64mm(2-1/2") Max. Rope Ø: 12mm(1/2") M.W.L.: 1,000kg(2,200lbs) B.L.: 2,000kg(4,410lbs) Weight: 480g(16.9oz)

Stainless Steel Single Block - 25mm Sheave Diameter for 25mm Stanchion Pivoting A single block intended for use on a dinghy. The block is light, reliable, and has good performance. Applications: For stanchion applications - furling system line Specifications: Materials Composite sheave and 316L stainless steel grade cheeks Rope size: (inch) 5/16"-25/64" / (mm) 8-10 Length: (inch) 3 47/64" / (mm) 95 Width: (inch) 2 3/32" / (mm) 53 Thickness: (inch) 53/64" / (mm) 21 Sheave Diameter: (inch) 63/64" / (mm) 25 Working load: (lb) 610 / (mm) 280 Breaking load: (lb) 880 / (mm) 400 Weight: (lb) 0.154 / (g) 70 Caption: Working Load (WL): For nautical applications Working Load Limit (WLL): For industrial applications only. The safety factor is 5 times the breaking load. WLL = Breaking load / 5 *Sold as an Individual

Single Lead Block - 19mm(3/4") Sheave Diameter Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Applications: Typically used in dinghy spars for control lines Materials: U.V. stabilized Acetal sheave Grade 316 stainless steel load housing Sheave Ø: 19mm(3/4") Max. Rope Ø: 8mm(5/16") Fastener Ø: 5.0mm(3/16") M.W.L.: 250kg(550lbs) B. L.: 550kg(1,100lbs) Weight: 20g(0.7oz)

Single Lead Block - 29mm(1-3/32") Sheave Diameter Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Applications: Typically used in dinghy spars for control lines Materials: U.V. stabilized Acetal sheave Grade 316 stainless steel load housing Sheave Ø: 29mm(1-3/32") Max. Rope Ø: 6mm(1/4") Fastener Ø: 5.0mm(3/16") M.W.L.: 600kg(1,320lbs) B. L.: 1,200kg(2,640lbs) Weight: 50g(1.8oz)

45mm Single Aluminum Element Fiddle Block with Swivel, Becket & 150 Cam Cleat Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a proven journal bearing. So size for size, Element is priced significantly lower, than our previously least expensive blocks. Sideplates are hardcoat-anodized to resist corrosion. A tough composite bearing sheave resists corrosion for a long service life. Specifications: Sheave Ø (mm): 45 mm Sheave Ø (in): 1 3/4 in Maximum line Ø (mm): 8 mm Maximum line Ø (in): 5/16 in Maximum working load (kg): 550 kg Maximum working load (lb): 1213 lb

45mm Single Aluminum Element Fiddle Block with Swivel & 150 Cam Cleat Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a proven journal bearing. So size for size, Element is priced significantly lower, than our previously least expensive blocks. Sideplates are hardcoat-anodized to resist corrosion. A tough composite bearing sheave resists corrosion for a long service life. Features: Sheave Ø (mm): 45 mm Sheave Ø (in): 1-3/4 in Maximum line Ø (mm): 8 mm Maximum line Ø (in): 5/16 in Maximum working load (kg): 408 kg Maximum working load (lb): 900 lb