Oster Elite Cryogen-X Pet Clipper Blades Groomers Favorite Clipper! Oster is the first blade manufacturer to incorporate AgION antimicrobial into the surface of the CryogenX blades. AgION antimicrobial uses silver, a powerful metal ion, as the active ingredient to effectively control the growth of bacteria, mold and mildew. This is important protection needed when clipping animals next to each other. The CryogenX treatment is a tempering process which deep freezes these high-carbon steel blades to -300 degrees Fahrenheit. Innovative "grooves" have been added to the comb portion to allow for more heat dispersion. The end result is that they not only start out sharp, they stay sharper longer, thus requiring less sharpening than conventional blades. Features: AgION antimicrobial blade surface Rockwell Rating of 82 · Titanium coating for added wear resistance and cooling · Able to be sharpened · Compatible with all Oster, Andis, Conair and Wahl detachable clippers Ships Quickly! Item Specifications: Blade Size Blade Cut 3 ST 1/2" - 13mm 4 ST 3/8" - 9.5mm 5 ST 1/4" - 6.3mm 7 ST 1/8" - 3.2mm 8 1/2 7/64" - 2.8mm 9 5/64" - 2.0mm 10 1/16" - 1.6mm 15 3/64" - 1.2mm 30 1/50" - 0.5mm 3F 1/2" - 13mm 40 1/100" - 0.25mm 4F 3/8" - 9.5mm 50 1/125" - 0.2mm 5/8 W 1/32" - 0.8mm 5 F 1/4" - 6.3mm 7/8 W 1/32" - 0.8mm 7 F 1/8" - 3.2mm 10 W 1/16" - 1.6mmw