Knipex Tools 77 32 120 H Electronics Diagonal Cutters Low-friction double spring for gentle and even opening The polish offers effective rust protection- no circuit faults caused by peeling chrome from plated tools. Hardness of the carbide cutting edges 80  83 HRC High- grade special tool steel; forged, oil-hardened Constantly reliable cutting results due to the avoidance of cutter deformations Sturdy, zero-backlash box joint