4 Pieces in 4 Cutting Lengths: #1 - 1/8"(3mm), #2 - 1/4"(6mm), #3 - 3/8"(10mm), #4 - 1/2"(13mm) Compatible with A5 Style Animal Clippers Oster A5 Classic 76 Golden, Wahl KM Series, Andis AGC, AGR, BGC, BGRC, etc. Made of heavy-duty ABS and metal, with metal clip and tension spring loaded, solid, sleek, smooth, and secure during the trimming process The guard combs are designed for both professional and home use, for both pet/cat/horse/dog grooming and human hair trimming 4 Pieces in 4 Cutting Lengths: #1 - 1/8"(3mm), #2 - 1/4"(6mm), #3 - 3/8"(10mm), #4 - 1/2"(13mm)