Oster Elite CryogenX Professional Animal Clipper Blade, Size # 4F
Leaves hair 3/8-inch 9-1/2mm. Primarily used for clipping the body and finishing cut on dogs and other animals. Compatible with A5, Power Pro, Power Max, Performax, Protege and Groom Master Clippers. Innovative heat reducing technology and legendary sharp cutting performance. Cryogenically treated for longer wear resistance.  Elite blades are further optimized with a titanium coating to increase overall surface hardness to maintain a longer lasting sharper edge.