Blocks

Schaefer Marine

Schaefer Series 5 Flat Base/Alum Cheek/Delrin Sheave [504-11]

Series 5 Flat Base/Alum Cheek/Delrin SheaveDelrin™ sheave ensures smooth operation and high safe working load. Stainless steel base distributes loads to a large surface area.Specifications:Sheave Diameter 2" (51 mm)Max. Line 7/16" (11 mm)Length...

Schaefer Marine

Schaefer Single Aluminum Block - 51mm Sheave [504-05]

Single Aluminum Block - 51mm SheaveSingle 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...

Schaefer Marine

Schaefer Series 3 Flat Base/Alum Cheek/Delrin Sheave [303-09]

Series 3 Flat Base/Alum Cheek/Delrin SheaveDelrin™ plain bearing sheave ensures smooth operation and high safe working load. Stainless Steel base distributes loads to a larger surface area.Specifications:Sheave Dia. 1-7/16" (37 mm)Max Line 7/16"...

Schaefer Marine

Schaefer Pulpit Furling Lead Spring Loaded Block - 1" Ball Bearing [300-35]

Pulpit Furling Lead Spring Loaded Block - 1" Ball BearingThe Stainless Steel spring guarantees maximum support for the block. Delrin™ ball bearing sheave ensures low-friction lead for your furling line.Specifications:1" (25mm) stanchionsLength...

Schaefer Marine

Schaefer Clamp-On Furling Line Stanchion Lead Block - 1" Ball Bearing [300-34]

Clamp-On Furling Line Stanchion Lead Block - 1" Ball BearingDelrin™ ball bearing sheave allows for quick and easy furling line adjustment. Stainless steel cage and strap ensure durability.Specifications:Stanchions 1" (25mm) in diameter1-7/16"...

Ronstan

Ronstan Series 30 Utility Ball Bearing Block - Single, Swivel Shackle Head [RF30100]

Series 30 Utility Ball Bearing Block - Single, Swivel Shackle HeadFeatures:Low friction 2-stage ball bearing system provides consistent performance over the full working load range.High static and dynamic load capacity.Light weightVersatile head...

Ronstan

Ronstan Series 30 Utility Block - Cheek, Curved Base [RF285]

Series 30 Utility Block- Cheek, Curved BaseFeatures:Lightweight durable constructionEconomicalMaintenance freeProduct Information:Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance.Applications:Vang,...

Ronstan

Ronstan Series 30 Utility Block - Double, Tube Rivet [RF417]

Series 30 Utility Block- Double, Tube RivetFeatures:Lightweight durable constructionEconomicalMaintenance freeProduct Information:Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance.Hollow rivets accept...

Ronstan

Ronstan Series 30 Utility Block - Single, Becket, Loop Head [RF681]

Series 30 Utility Block - Single, Becket, Loop HeadFeatures:Lightweight durable constructionEconomicalMaintenance freeProduct Information:Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets...

Ronstan

Ronstan Series 15 Ball Bearing Utility Block - Exit Block [RF15711]

Series 15 Ball Bearing Utility Block - Exit 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...

Ronstan

Ronstan Series 15 Ball Bearing Utility Block - Pivoting Lead Block [RF15174]

Series 15 Ball Bearing Utility Block - Pivoting 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...

Ronstan

Ronstan Series 15 Ball Bearing Utility Block - Single Block, Loop Head [RF15101]

Series 15 Ball Bearing Utility Block - Single Block, 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...