... Hoisting Operation Or Using Of Two Complementary, Only A Single Vertical Clamp Lifting Weights Is The Largest Rated Load.Lifting Must Be ... The Locking Handle Down, Relax Spring, And Clamp Plate Can Bu Separated.The Vertical Lifting Clamp Of Dsq1Dsq2Dsq3And Dsq5, The Proof Load Is ... The Breaking Load Is 4 Times Working Load Limit. The Vertical Lifting Clamp Of Dsq8Dsq12Dsq16, The Proof Load Is 1.5 Times ...