GT317 Cutting Head - No. 30 Snap On Aesculap. This cutting head is compatible with all clip system trimmer models (Oster, Moser, Wahl, Andis, Heiniger, etc.). Cutting height: 0.50 mm GT317 Cutting Head - No. 30 Snap On Aesculap Usable on all clip system trimmers: Oster, Moser, Andis, Heiniger, Wahl, Aesculap (only FAV 5), Cutting height at 0.50 mm This cutting height (0.50 mm) is preferred for ears (inner, tips), tails, and muzzles Recommended for all types of fine hair Regular and clean cut thanks to the special design geometry of the teeth The Snap On Aesculap range is made from high-quality carbon steel. For the maintenance of your cutting heads, we recommend using B18 and the dust remover regularly to eliminate hair that may be trapped between the teeth. We recommend having your cutting heads sharpened regularly as soon as you feel that the cut is no longer smooth.