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
High speed twist drill set with medium-fine grit diamond coating to the tips. Great for drilling stone, ceramic, glass and other hard non-metallic materials. The drills are made of superior high grade steel. Choose from these sizes: #36, 40, 45, 47, 50, 51, 52, 53, 54, 56, 61 and 65.
Liquid lubricant/coolant is recommended when using all diamond coated tools