Ask a QuestionSpecification: Shank: Round HandleFinish: White DiamondUsed in 25° hardness below the workpiece, such as carbon steel, sheet metal, insulation board, pvc board, woodMaterial: HSS 4241Main Color: GoldSurface Treatment: titanium coatedAsk a QuestionSize:(Head Diameter*Shank Diameter*Length)6.3MM: 6.3MM*5MM*37MM8.3MM: 8.3MM*6MM*40MM10.4MM: 10.4MM*6MM*39MM12.4MM: 12.4MM*10MM*46MM16.5MM: 16.5MM*10MM*47MM20.5MM: 20.5MM* 10MM*47MM Package Includes: 6pcs x 90° Drill Bit Payment1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow.2) payment must be made within 3 days of placing the order.3) if you are unable to check out immediately after the listing ends, please wait a few minutes and try again, payments must be completed within 3 days. Shipping1.