Groom Sharp Ceramic Blades Sharpened by skilled craftsmen and made from high-quality German steel with a ceramic cutter, Master Grooming Groom Sharp Ceramic Blades offer professional results at a DIY price! Groom Sharp Ceramic Blades are compatible with all A5-style detachable-blade clippers. Made from premium-quality, high-carbon, ice-tempered German steel Honed by skilled craftsmen for superior sharpness Holds a sharper edge longer than traditional detachable blades, requiring less sharpening Ceramic cutter produces less friction, staying 50% cooler than steel blades Chrome coating and heat treatment ensures maximum rust-resistance and durability Material: German steel, ceramic Sizes: #40 Blade (1/100" cut) #30 Blade (1/50" cut) #15 Blade (3/64" cut) #10 Blade (1/16" cut) #7F Finish Blade (?" cut) #5F Finish Blade (" cut) Rockwell Hardness Rating: Steel blades: 70; ceramic cutter: 78