Description:

[SIZE] - 12.1mm / 0.476-inchdrilling diameter, 150mm / 5.91-inch length twist drill bit, 80mm / 3.15-inch drilling depth, 12.1mm / 0.476-inch round shank.. [MATERIAL] - High speed steel(HSS) is high toughness and high hardness, and is not easy to break. The drill bit is sharp and is easy for chip removal.. [APPLICABLE MATRRIALS] - Suitable for processing non-ferrous metals (such as copper and aluminum), non metallic and ferrous metals (such as iron, steel and stainless steel).. [APPLICATION] - Wider using range (rough processing, finishing, semi finishing), and comes with edge clear function, make processing products have better surface finish.. [NOTICE] - When drilling, it is necessary to add cutting fluid in time to lubricate and cool down, which can get a better drilling hole wall, extends the service life and drilling accuracy..