Schaefer Single Stainless Steel Block - 60mm Sheave [705-05] Marine Plumbing & Ventilation | Thru-Hull Fittings It provides protection to the

It provides protection to the side of the tubes against abrasion and chafing caused by docks

Inverter Cont

And if you're concerned about the force exerted on a mast stay or perhaps a vessel tow attachment point

Trolling Snubber

Diameter:1-9/16"

Schaefer Single Stainless Steel Block - 60mm Sheave [705-05] Marine Plumbing & Ventilation | Thru-Hull Fittings It provides protection to theSingle 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)