31/64" X 9" OAL with 3MT Oil Hole Drill w/ Taper Shank Oil Hole Taper Shank Drills-Coolant Drills
31/64" X 9" Taper Shank Oil Hole Drills. - .4844 Decimal Equivalent, 4-3/8 Flute Length, 9-1/4 Overall Length.
Taper Shank Oil Hole Drills are twist drills containing a hole that delivers coolant to the edges of the drill bit. Coolant greatly reduces chip packing by flushing chips out of the hole and lowering the heat. Bisco Tool Supply sells Taper Shank Oil Hole Drills perfect for deep hole drilling.
||31/64" X 9" OAL with 3MT Oil Hole Drill w/ Taper Shank