... :high strength steel alloy; 3).Light and portable Chain Lever Hoist 0.75 Tons / Lever Block (aluminum alloy type) Features: 1 ... for equipment installation in fields such as electrical power,ship building,transportation,building construction, mining,communication, as well as lifting, pulling. 2 ... MLSB-669.00 665021501.573018.0 2.80 Chain Lever Hoist 0.75 Tons (aluminum alloy type)