chrome vanadium curved jaw locking plier,heat treated ,drop forged ,ideal for power ... steel 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 ... edgeweight:520~530guse;ideal for tightening,twisting,turning locking plier