Milwaukee Step Drill Bit, Imperial, #4 Letter/Wire, 3/16 in Diameter Minimum Hole, 7/8 in Diameter Maximum Hole, 12 Steps, 12 Hole, 2 Flutes, 3/8 in Shank, 3-Flat/Reduced Shank, HSS Cutting Edge, HSS, Black Oxide, Applicable Materials: Metal and Plastic

ITEM FEATURES:

• JAM-FREE Performance: Dual-flute design provides greater speed and control
• Up to 2X faster: optimized for cordless drills in high speed
• Rapid Strike tip: creates fast, accurate starts and generates less heat
• Up to 4X longer bit life: optimized geometry with black oxide coating to cut faster and produce less heat
• Up to 50% more holes per battery charge for more productivity
• Laser-engraved reference marks easily stop on any hole size
• 3-Flat secure-grip shanks reduce bit slippage in the chuck
• Made in the USA