Features Blade for K5 PART# : RB-K5 Fibretool is providing your highest quality Fiber Cleaver Blades. The cleaver blades made of West German imports of steels. For simplex fiber per blade position cleaving life more than 48000times ; For Ribbon fiber per blade position cleaving life more than 350 times, Meets and exceeds specifications required for the Fiber Optic industry. 100% individually inspected to ensure that they adhere to our stringent tolerances. Guaranteed compatible.