Specifications System: Metric SizeDiameter: M3 - 20Size: M1.6 upto M52 10ba upto 2.12".Grade: Steel, Stainless Steel, 302, 304, 304L, 316 Salient Features PolishedSmooth shankDiamond pointStandard: DIN, ANSIASME B7, BS, GB, JIS, Non-standard.Material: Carbon steel, stainless steel