Master Grooming Tools Ceramic Pet Blade, Size 5F Finish, 1/4-Inch Cut Length Ceramic clipper blade is made from a high-tech ceramic material Hold a sharper edge longer than traditional detachable blades Require less sharpening treatments Rockwell hardness of 72; blade size is 5f finish and 1/4-inch cut length Measures 4-4/5-inch length by 3-4/5-inch width by 1/2-inch height