... strength steel alloy; 3).Light and portable Chain Lever Hoist 0.75 Tons / Lever Block (aluminum alloy ... , sag adjustment,staying wire in power line construction, and for equipment installation in fields such ... as electrical power,ship building,transportation,building construction, mining,communication, as well as lifting, pulling. ... .0 2.80 Chain Lever Hoist 0.75 Tons (aluminum alloy type)