Fits JRL Clippers and Onyx Clippers part # BF04BThe original JRL Black FreshFade Fade Taper Blade 2020 Clipper JRL-BF04 is installed on the JRL FreshFade 2020 hair clipper. The cutting block is made from a hardened steel alloy that stays sharp longer, with a chrome finish for improved corrosion resistance.Reduced heatingThe Cool Touch grooves on the bottom blade dissipate heat faster, reducing the heat of the knife during extended cuts, keeping the surface cooler longer.The patented surface grinding and polishing technology gives a low coefficient of friction, which guarantees a smooth running of the knives, low heat levels and a clean cut.DESIGN WITH PRECISION IN TOUCH AREASALUMINUM COATED MOVABLE & FIXED BLADESELF SHARPENINGBlack ColorRust-free, long lasting, self-sharpening Stainless Steel blades