... life.(4)Stocks adequate, time delivery.(5)Rich experience in drill bit.(6)High quality, competitive price2.Detailed product description(1)The ... timeWithin 3 to 7 daysapplicationPetroleum and gas, water well, mining and tectonic industries, oil field, construction, geothermal, directional boring and underground ... customized angles, diamond thickness, chamfers, and sizes. 9 1/2 PDC oil drill bit