The Knipex 71 Series CoBolt® Compact Bolt Cutters have a lever action mechanism which guarantees an extremely favourable lever ratio with low friction, and cutting performance is 20 times higher than the hand force applied (requires 60 % less effort). CoBolt® compact bolt cutters are ideal for piano wire or for soft solid wire, bolts, nails, rivets and screws. Induction-hardened and with precision cutting edges. Edge hardness approximately 64HRc for added strength and durability, they have exceptional cutting performance with minimal physical effort because of the lever action.