This ratchet wrenches is made of high strength Cr-V steel with max torque can be as much as 800NM, chromed finished provides great anti-rust performance, and tepered podger handle can be easily forced into the holes to line up so a bolt can be passed through holes without being forced and damaged. Its high quality inserted type rivets provide outstanding ratcheting performance and melodious sound, ENJOY THE SCAFFOLDING ERECTING!