RS Submarine Pro Stripping Knife Professional cable knife constructed from high Carbon Steel for the cutting and stripping of cables and cable jackets. iF Product Design Award Winner 2009 Will strip cable up to 50mm in diameter and wire from AWG 10-20 Vacuum hardened to 58-60 HRC for excellent strength and a clean reliable cut Precision ground cutting edge for long lasting sharpness Serrated tip ideal for stripping cable jacket Metal guide shoe allows quick straight cutting without the risk of damaging the wires through overpenetration