For stripping all standard round cables 8 ~ 28 mm (5/16" ~ 1.1/8"). Knifes with special Titanium-Nitride coating (TIN) to achieve longer life, faster cutting and less wear. The large adjustment screw allows for effortless adjustments. Automatic adjustment from round~ to length cut. Including TIN coated spare blade in the handle. With TIN coated straight blade.