Geib Buttercut Stainless Steel Dog Clipper Blade, Size-4 Skip Tooth, 3/8-Inch Cut Length Buttercut dog clipper blade is designed for use with all type A5 blades Edges stay ultra-sharp longer and rockwell hardness is 71 Lasting performance and durability Made of premium-quality, high-carbon German steel to cut precisely and cleanly for superior results Comes in size-4 skip tooth and 3/8-inch cut length