This is a Stand-Up Swivel Pulley Block (also known as a sailboat plain bearing stand-up block).

This is a High Load Marine Boat Stainless Steel Nylon Block Single Pulley with D Shackle (also known as a sailboat block). It is a mechanical devi...

Heavy Pulley Block Single Pulley Rotating Grille Sailboat Marine Single Sailing Block with D shackle. Commonly used as a sailing hardware tool for...

Single Swivel Sailing Block with Bow Shackle (also known as a marine pulley block), featuring a 360-degree rotating head, a low-friction single sheave, a...

This is a Double Swivel Sailing Block (also known as a double sheave marine pulley. Unlike the single-wheel version, this model features two side-by-side ...

This is a Stainless Steel Single Sheave Snatch Block with a Swivel Hook and Becket.Unlike the fiber or composite sailing blocks discussed earlier, th...