Strips most non-round shielded cable including Kapton, and Kynar, TEFLON, Tefzel and high-temperature insulated cable Spring-loaded head provides even tension Fixed blades are sized to insulation for accurate stripping With deep-V for larger cable diameters up to .30 inch (7.62mm) Blades sold seperately TEFLON is a registered trademark of E.I. du Pont de Nemours and Company.