Pulleys are devices with wheels and a fixed axis supporting a rope that goes around. They are used to help when there are massive weights to be lifted as these devices will help you to make your lifting process easier...

Pulley blocks and snatch blocks are both pulley blocks; these lifting tools have a wheel on an axle designed to help you lift heavy items up to 30 tonne. Pulley blocks give direction to the rope while loaded; they are...