GT366 Cutting Blade - No. 4 Snap On Aesculap. This cutting blade is compatible with all clip system clipper models (Oster, Moser, Wahl, Andis, Heiniger, etc.). Cutting height: 9.5 mm GT366 Cutting Blade - No. 4 Snap On Aesculap Usable on all clip system clippers: Oster, Moser, Andis, Heiniger, Wahl, Aesculap (only FAV 5), Cutting height at 9.5 mm This cutting height (9.5 mm) is recommended for grooming the back, legs, and body. Recommended for all types of hair. Regular and clean cut thanks to the special tooth geometry. The Snap On Aesculap range is made with high-quality carbon steel. For the maintenance of your cutting blades, we recommend using the B18 and a dust remover regularly to eliminate hairs that may be trapped between the teeth. We recommend getting your cutting blades sharpened regularly as soon as you feel that the cut is no longer smooth.