Use：Fix on the I steel to support the hoist block equipment.
Load range: 0-5 tons.
It is manufactured by low-carbon hi-quality alloy steel.
Only hang by the single drum,Test load is the max.operation load of 2 times
Usage way:Lock the screw counter-clockwise,and loosen the clamp mouse.
Clamp the inferior border of I-steel as the picture.Lock the screw clockwise to clamp tightly.
Don’t overload to use.
