The knipex 71 series co bolt 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 co bolt 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 cut