chrome vanadium curved jaw locking plier,heat treated ,drop forged ,ideal for power work ... body high quality material:chrom vanadium curved jaw locking plier,with or without cutting edge,drop forged,heat treated ... ,sturdy 3 rivet and welded design,ideal for heavy duty carbon steel body surface:chrome nickel plated,powder coating, ... :520~530guse;ideal for tightening,twisting,turning combination plier