Oster Professional blades are produced from the finest high-carbon steel and handcrafted to our rigorous standards, providing unparalleled precision and performance. Furthermore, our U.S. made blades are hardened to RC62-66 (Rockwell Scale C) in-house prior to receiving a cryogenic treatment which further enhances the hardening process. The blade cutting surfaces are then sharpened, finished and tested with proven Oster proprietary processes, ensuring ultra-sharp blades that continue to stand the test of time. Features wider space between the teeth for easier feeding Wider teeth allow for quicker clip-down time Ideal for matted shavedowns, blocking, trimming and carving, good for heavy coated & matted dogs Fits A6 , Golden A5 , Turbo A5 , Power Max and PowerPro Ultra Clippers