Andis 64255 CeramicEdge clipper blade, size 15. Leaves Hair Inch 3/64 ". Leaves Hair mm 1.2 mm. CeramicEdge blades feature a certified zirconium oxide ceramic cutter blade. CeramicEdge blades offer the following advantages Higher durability, stays sharper longer. Cutter runs 75% cooler than steel. Feature a smoother, faster cutting feel regardless of length or density. Break resistant material. For Andis detachable blade clippers. Can also be used with other brands of detachable type clippers.