The pulley block lift and lower weights of up to a ton on a steel chain. The robust, closed construction is ideal for theworkshop, agriculture and forestry, for crafts, industry and gardening and landscaping. This solid block of steel has great effect and can greatly improve work efficiency and save much labor for workers. It is safe to use with steel structure ensuring that you can lift safely and easily.Features:Made of alloy steel, safe and reliable, convenient maintenance, beautiful appearance.The surface is coated with plastic, not easy to rust, durable and long service life.High mechanical efficiency, high strength and toughness, lift safely and easily.Lightweight compact design for tight applications, easy to carry.Do not need electricity to power, perfect for lifting where there is no power available.Specifications:Material: Alloy steelRated Lifting Capacity: 500kgLifting Height: 2.5m / 8.2ft Chain Diameter: 0.6 cm / 0.23inBody Size: 13.8cm / 5.43inHook Size: 8cm / 3.15inMinimum Distance Between Two Hooks: 27cm / 10.62inInstruction:1, Do not pull obliquely, do not overload.2, It is strictly prohibited to operate with power other than manual labor.3,Confirm all the parts are intact before using, transmission parts and lifting chain lubrication is good and idle condition is normal.4, Check lifting hook is hang up stably before use. Liftingchain should be vertical and there can not be wrong twisted link. The lower hook rack of double line chain can not be reversed.5,Operator should stand in the same plane as the hand chain, and drag hand chain along the clockwise rotation to raise a weight, or reverse drag hand chain to lower.Package Includes:1 x Chain Block Note:1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard..