Blocks

Micro Cam-Matic Aluminum CleatHarken® ball bearing cam cleats hold lines securely and release instantly for easy, precise trimming. Aluminum Cam-Matics® are hardcoat-anodized for high-load, high-wear, continuous adjustment applications...

Micro Cam-Matic Aluminum Cleat Kit with Wire FairleadWire fairleads maintain a low profile while holding the line close to the cleat. Kit includes 468 Cam-Matic® and 475 wire fairlead.Specifications:Weight: 33g / 1.2ozMaximum working load: 91kg /...

Micro Carbo-Cam Cleat Kit with Wire FairleadWire fairleads maintain a low profile while holding the line close to the cleat.Kit includes lightweight, fiber-reinforced 471 Carbo Cam, and 475 wire fairlead.Specifications:Weight: 26g / 0.9ozMaximum working...

Micro Carbo-Cam Base with BullseyeMicro Carbo-Cam® with bullseye keeps line fair. Mounts on stainless steel base.Specifications:Height: 22mm / 7/8in.Weight: 50g / 1.75ozMinimum line: 3mm / 1/8inMaximum line: 6mm / 1/4inFastener spacing: 27mm /...

Micro Carbo-Cam CleatHarken® ball bearing cam cleats hold lines securely and release instantly for easy, precise trimming. Lightweight fiber-reinforced Carbo-Cams® for racing where weight is critical, or where adjustments are less frequent...

Midrange Double BlockMidrange blocks’ robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load...

Midrange Single BlockMidrange blocks’ robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load...

Midrange Single with Aluminum Sheave BlockMidrange blocks’ robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any...

Standard Cam-Matic® Aluminum CleatAluminum Cam-Matics® are hardcoat-anodized for high-load, high-wear, continuous adjustment applications. Specifications:Height: 30 mm / 1-3/16 inLength: 65 mm / 2-9/16 inWidth: 32 mm / 1-1/4 inWeight: 71 g...

Standard Cam-Matic® Aluminum Kit with Wire FairleadWire fairleads maintain a low profile while holding the line close to the cleat. Kit includes hardcoat-anodized 150 aluminum Cam-Matic® and 298 wire fairlead.Specifications:Weight: 85g / 3 oz...

Micro Standard Carbo-Cam Base with BullseyeMicro Carbo-Cam® with bullseye keeps line fair. Mounts on stainless steel base.Specifications:Height: 33mm/1-5/16inWeight: 85g/3ozMinimum line: 3mm / 1/8inMaximum line: 10mm / 3/8inFastener spacing: 27mm /...

Standard Carbo-Cam® CleatHarken® ball bearing cam cleats hold lines securely and release instantly for easy, precise trimming. Lightweight fiber-reinforced Carbo-Cams® for racing where weight is critical, or where adjustments are less...

Standard Carbo-Cam® Kit with Wire FairleadWire fairleads maintain a low profile while holding the line close to the cleat. Kit includes lightweight, fiber-reinforced 326 Carbo Cam and 298 wire fairlead.Specifications:Weight: 54g / 2 oz.Maximum...

50mm Synchro Block - SingleLewmar's Synchro Blocks are engineered for speed, efficiency, and superior handling.  Using a combination of scientifically optimized block geometry, a Free-Spin bearing, and a self-aligning head to reduce friction and...

60mm HTX Block - SingleYears of design and manufacturing experience coupled with collaboration with boat builders, designers, and sailors have resulted in the Lewmar HTX Hardware Range.  Drawing upon the design of the Racing Range, the HTX blocks...

60mm Synchro Block - SingleLewmar's Synchro Blocks are engineered for speed, efficiency, and superior handling.  Using a combination of scientifically optimized block geometry, a Free-Spin bearing, and a self-aligning head to reduce friction and...

72mm HTX Block - SingleYears of design and manufacturing experience coupled with collaboration with boat builders, designers, and sailors have resulted in the Lewmar HTX Hardware Range. Drawing upon the design of the Racing Range, the HTX blocks are...

72mm Synchro Block - SingleLewmar's Synchro Blocks are engineered for speed, efficiency, and superior handling.  Using a combination of scientifically optimized block geometry, a Free-Spin bearing, and a self-aligning head to reduce friction and...

90mm Synchro Block - SingleLewmar's Synchro Blocks are engineered for speed, efficiency, and superior handling.  Using a combination of scientifically optimized block geometry, a Free-Spin bearing, and a self-aligning head to reduce friction and...

Kite Block - Black w/White SheaveFeatures:Lightweight durable constructionEconomicalMaintenance freeApplications:Vang, cunningham and trapeze retriever systems on dinghiesLeech line tackles, bunk adjusters etc on larger yachtsMaterials:U.V. stabilized...

Nylatron Sheave Box - Single Upright Lead BlockLead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers.When mounted in an inverted position, are frequently used as upright leads.Features:The...

Race Acetal Sheave Solid Bearing - 39mm(1-1/2") ODFeatures:High strength & durability, utilizing the self-lubricating properties of Acetal

Race Sheave - Acetal Ball Bearing - 28mm(1-1/8") ODPrecision moulded Acetal sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction.Acetal Sheaves:Choice of bearingsSolid bearing - high strength and durability,...

Race Sheave - Acetal Ball Bearing - 50mm(1-15/16") ODPrecision moulded Acetal sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction.Acetal Sheaves:Choice of bearingsSolid bearing - high strength and durability,...

Race Sheave - Acetal Ball Bearing - 66mm(2-5/8") ODPrecision moulded Acetal sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction.Acetal Sheaves:Choice of bearingsSolid bearing - high strength and durability,...

RF568 Lead BlockLead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers.When mounted in an inverted position, are frequently used as upright leads.Features:Removable sheaveThe external tabs can be...

S40 Soft Attachment Block - SingleEasy to attach and easy to open, Ronstan's soft attachment snatch blocks are built to perform and built to last.With the shackle open, cheek plates twist to open the block and a spring loaded ball secures the assembly...

S60 Soft Attachment Block - SingleEasy to attach and easy to open, Ronstan's soft attachment snatch blocks are built to perform and built to last.With the shackle open, cheek plates twist to open the block and a spring loaded ball secures the assembly...

S70 Soft Attachment Block - SingleEasy to attach and easy to open, Ronstan's soft attachment snatch blocks are built to perform and built to last.With the shackle open, cheek plates twist to open the block and a spring loaded ball secures the assembly...

Series 15 Ball Bearing Block - TripleFeatures:Smallest and lightest ball bearing block availablePrecision molded acetal sheave running on stainless steel ball bearings provide high performance & low frictionSingle loop head blocks include an O-ring...

Series 15 Ball Bearing Utility Block - Cheek BlockFeatures:Smallest and lightest ball bearing block availablePrecision molded acetal sheave running on stainless steel ball bearings provide high performance & low frictionSingle loop head blocks...

Series 15 Ball Bearing Utility Block - Double, BecketFeatures:Smallest and lightest ball bearing block availablePrecision molded acetal sheave running on stainless steel ball bearings provide high performance & low frictionSingle loop head...

Series 15 Ball Bearing Utility Block - Double, Loop HeadFeatures:Smallest and lightest ball bearing block availablePrecision molded acetal sheave running on stainless steel ball bearings provide high performance & low frictionSingle loop head blocks...

Series 15 Ball Bearing Utility Block - Single Block, Becket, Loop HeadFeatures:Smallest and lightest ball bearing block availablePrecision molded acetal sheave running on stainless steel ball bearings provide high performance & low frictionSingle...

Series 15 Ball Bearing Utility Block - Single, Swivel Hook HeadFeatures:Smallest and lightest ball bearing block availablePrecision molded acetal sheave running on stainless steel ball bearings provide high performance & low frictionSingle loop head...

Series 15 Ball Bearing Utility Block - Single, Swivel Shackle HeadFeatures:Smallest and lightest ball bearing block availablePrecision molded acetal sheave running on stainless steel ball bearings provide high performance & low frictionSingle loop...

Series 15 Ball Bearing Utility Block - Stand-Up BlockFeatures:Smallest and lightest ball bearing block availablePrecision molded acetal sheave running on stainless steel ball bearings provide high performance & low frictionSingle loop head blocks...

Series 15 Ball Bearing Utility Block - Triple Block, Becket, Loop HeadFeatures:Smallest and lightest ball bearing block availablePrecision molded acetal sheave running on stainless steel ball bearings provide high performance & low...

Series 15 Ball Bearing Utility Block - Upright Lead BlockFeatures:Smallest and lightest ball bearing block availablePrecision molded acetal sheave running on stainless steel ball bearings provide high performance & low frictionSingle loop head...

Series 15 Webbing BlockRonstan’s Series 15 blocks are available in 15 different configurations or as a sheave only.The smallest and lightest ball bearing blocks on the market, stainless steel ball bearings help create impressive working loads for...