Oster PowerMax 2-Speed Professional Animal Clipper, Cattle SKU with Opti-Block Blade AgION Antimicrobial: Only blade in the industry protected by antimicrobial coating against a broad range of bacteria. Ultrafast: This whisper quiet, 2-speed clipper delivers over 4100 strokes per minute. Cool Comfort Grip: Contoured grip remains cool for maximum comfort. Maximum Power: Our most powerful clipper, Powermax handles the toughest jobs with ease Super Lightweight: 20 percent lighter than the Oster A5 clipper.