Lever block Capacity form 0.25t,0.5t,0.75t,1t,1.5t,2t,3t,6t,9t.Strong design, all steel construction.Drop-forged top and bottom hooks specially designed for slow bending to warn overloads.Load chain sprocket with precision machining has been got well heat-treatment.Double pawl springs provide redundancy for reliable operation of brake mechanism.Asbestor-free brake discs.All the gear process on the CNC machinery with heat treating to  provide good performance.Durable chrome finished housing and power coat paint are optional.T80 grade high tensile lifting chain make more effective，1.5 times overload test one by one. Safe factor:4:1，TUV CE certified，One year warranty