MroMax 0_2T Lifting Crane Swivel Hook Single Pulley Block Hanging Wire Towing Wheel Silver Tone 1Pcs

Features: Package Content: 1pcs x Crane Pulley Block; Main Material: Iron; Overall Size: 123 x 55 mm / 4.84 x 2.17 inch(L*W); Sheave U width:18 mm/0.71 inch; Accept Max Weight: 0.2T 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.