Our Master Grooming Tools HLD (Hard Like Diamond) Clipper Blades are created using sp3 bonds giving them a high micro-hardness and superior wear resistance. Steel/carbon hybrid Can be used longer without the risk of overheating Less likely to cause clipper burn on animals The anti-friction properties of the blades help the hair glide through the blade easily creating an even cut. Blades are packaged for retail. Available in 9 sizes detailed below. See the Specifications tab for product details.