OSTER #4F BLADE FITS ALL OSTER A-5(SINGLE AND 2 SPEED), ANDIS (PET PRO, AG, AGC, AGC2), LAUBE, AND WAHL PROFESSIONAL CLIPPERS. THE SKIP TOOTH #4 BLADE IS BEST SUITED FOR ANIMALS WITH WELL BRUSHED OUT COATS AND IS USED ON THE BODY, SIDE, BACK, AND TAIL. FOR THOSE DESIRING THE LONGEST LENGTH OF COAT POSSIBLE WITHOUT A CLIP ON COMB, THIS IS YOUR BLADE OF CHOICE. THIS BLADES DEPTH OF CUT IS 3/8 , 9MM.