We are Jiangsu Tiangong Tools based in Danyang City, USA. We are member of TradeKey.com since August, 2016. Our business is related to Industrial Machinery industry and we specifically deal in drill bits,drill,drill bits,steel drill. Please find our product details below: hss speed stell , alloy steel , plastic mould steel HSS Flat Bar Grade Width Thickness 1.3343 M2 100-510mm 14-70mm 100-320mm 70-80mm 1.3247 M42 100-320mm 14-80mm Tool Steel Flat Bar Grade ��� Width Thickness 1.2344 H13/SKD61 300~810mm 14-120mm ��� S7 1... Taper Shank Drill BITS HSS M42 / M35 / M2 / 4341 / 4241 Bright / Black / TiN Coated size Dia 6.0mm -75.0mm twist drill bit Thank you for taking time to go through our business profile. If there are any questions, inquiries or comments, please feel free to contact us.