The package comes with 4 pieces guard combs, #1 (1/8"), #2 (1/4"), #3 (3/8"), #4 (1/2"）, and 1 piece cleaning brush for hair clipper cleaning The guard combs are made of premium ABS and metal, the point of attachment to clippers is metal, and with spring-loaded Compatible with Oster Classic 76 A5 Series Andis AG BG; and Andis AGC, AGR, BGC, BGRC, and Wahl KM Series and other A5 Style Animal Clippers Statement: The gap between the blade and the combs does not affect the cutting length of the guards, the cutting length is counting on the blade tooth end position to the scalp(which is the comb end), the "GAP" design was meant to make the guide combs compatible with most A5 pet groomers on the market which is what we've achieved now Easy to put on and take off from your hair clipper, and with the metal clip securely mounted to your clipper blade, it won't fell off during shearing The package comes with 4 pieces guard combs, #1 (1/8"-3mm), #2 (1/4"-6mm), #3 (3/8"-9mm), #4 (1/2"-12mm）, and 1 piece cleaning brush for hair clipper cleaning