1.Diameter: 1-20mm 2: Length: 50-200mm 3:Finsih: Tialn coated 4.package:,plastic tube Diameter:1-20 mmLength:50-200mmSuitable for:clinker,concrete,brick,natural or artifical stone.Pakeage:hangtag,pouch bag,tube,blister card cemented carbide tipped twist drill bits