1) 6 1/8 blue drill bit 2)size:From 2 7/8 to 26 larger sizes for hole opener bit ,reamer bit 3)material;tungesten carbide 1) 6 1/8 blue drill bit2)size:From 2 7/8 to 26” larger sizes for hole opener bit ,reamer bit3)material;tungesten carbide4)packing:wooden case or steel case5)market:Canada, USA,Middle east ,Africa,Europe