Oster Skip Tooth Detachable Pet Clipper Blade, Size 5 (078919-066-005) Size 5 detachable pet clipper blade cuts to 1/4 inch (6.4mm) Ideal for removing matted or heavy, coarse coats Fits Oster A6, Golden A5, Turbo A5, Power Max, and PowerPro Ultra Clippers Heat treated to more than 1,000 degrees F for added toughness and strength Cryogenically frozen for durability