MroMax M25 Lifting Crane Swivel Hook Double Pulley Block Hanging Wire Towing Wheel 304 Stainless Steel Silver Tone 2Pcs

Features: Package Content: 2pcs x Crane Pulley Block; Main Material: 304 Stainless Steel; Sheave diameter: 25mm / 0.98 inch; Overall height: 85mm / 3.35 inch; Sheave U width:11mm/0.43 inch ; Accept Max Weight: 150kg Description: A Crane Pulley Block is a kind of hoisting tool, also called a sheave, is a mechanism composed of a wheel on an axle or shaft that may have a groove between two flanges around its circumference. A rope, cable, belt, or chain usually runs over the wheel and inside the groove, if present. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.