Vd lever block features: 1) capacity from 0.25t to 9t 2) have certificate of ce 3) got certificate of iso9001 4) automatic double-pawl braking system 5) chain guides provide smooth chain operation 6) roller bearing supported load sheaves for avoiding abrasion 7) chain are made of special alloy steel that is exclusively 8) drop forged kooks to ensure superior quallity and safety 9) the lever hoist static test is 4 times of capacity, and running test is 1.5 times of capacit one by one Vd Capacity:250kg~6000kg Standard lift height:1.5m Running test load:375kg~7500kg Hand-pull to lift:260~370kg Load chain diameter:4~9mm Load chain diameter:6.3~9mm Net weigth:2.2~24.5kg