drill bits & sets
irwin industrial tool . 44inch x 6inch speedbor max speed drill bit 3041015
drill bit speedbor series tri flute design for faster chip ejection cutting spurs have 3 cutting edges for added durability full screw tip allows bit to self feed grooved hex shank prevents slipping in drill chuck or bit extension fits all standard 25 quick change chucks 7 16 x 6 carded sku jnsn18643
irwin industrial