Buttercut Dog Clipper Blades are crafted with the same care and quality as the incomparable Geib Shears. Made of premium-quality, high-carbon German steel to cut precisely and cleanly for superior results. Rockwell hardness is 70 Edges stay ultra-sharp longer Lasting performance and durability. Additional Details ------------------------------ Product description: Buttercut Dog Clipper Blades are crafted with the same care and quality as the incomparable Geib Shears. Made of premium-quality, high-carbon German steel to cut precisely and cleanly for superior results. Rockwell hardness is 70 Edges stay ultra-sharp longer Lasting performance and durability. Directions: [INCOMPLETE] Attach/detach components (clipper blades), adjust trim lengths (using the blade's cut length of 1/50-Inch), ensure compatibility with A5 blade-style detachable clippers with a Rockwell Hardness of 70, and maintain the high-quality performance of the German Steel blades.