Oster 40 Cryogen X Ag ION Blade• Replacement clipper blade constructed from cryogenically treated carbon steel.• Advanced Ag ION antimicrobial protection is built into the blade surface.• Ideal for surgical preparation or very close grooming work.• Universal snap-on blade, should fit most types of Andis, Oster or Wahl clippers. The Oster 40 Cryogen X Ag ION Blade is a high quality carbon steel blade, cryogenically treated to keep edges sharp. The blade features advanced silver-based Ag ION antimicrobial protection to help prevent the growth of bacteria, mould & mildew. This quality universal replacement blade will fit any Andis, Oster or Wahl clipper with a snap-on blade mechanism. Please note that we only recommend 10 or 15 blades to be used with attachment combs as any other blades may be damaged. Groomers Expert Tips: This blade has undergone cryogenic treatment, meaning it will hold edge better & stay sharper for longer. Please browse our full Oster Blades range.