Step drill #1, 1/8 in - 1/2 in x 1/32 in

Milwaukee® JAM-FREE Step Drills with a dual-flute design provide up to 2X faster drilling, up to 4X longer life and up to 50% more holes per battery charge than the competition. Ideal for drilling large and small-diameter holes in steel and plastic, these bits are optimized for cordless drills in high speed. The Rapid Strike™ tip enables fast and accurate starts that generate less heat, which prolongs the life of the bit tip. The black oxide coating also enhances durability, hole quality and bit life. For user convenience and accuracy, each bit has laser-etched markings you can see while drilling. The 3-flat Secure-Grip™ shank ensures a solid connection with the drill chuck. The #1 Step Drill has 13 hole sizes in 1/32 in. increments ranging from 1/8 in. to 1/2 in. JAM-FREE performance in high speed with most professional 18-volt cordless drills with lithium-ion battery technology.

• JAM-FREE Performance: Dual-flute design provides increased speed and control.
• Up to 2X Faster: Optimized for cordless drills in high speed.
• Rapid Strike™ Tip: Creates fast and 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 increased productivity
• Laser-Etched Reference Marks easily stop on any hole size
• 3-Flat Secure-Grip Shanks reduce bit slipping in the chuck.
• Made in the USA

• Height 149.9 mm 
• Width 16.5 mm 
• Length 16.5 mm 
• Weight 59 g 

• Product Type Step Drill Bit
• Drill Bit Type Step
• Bit Type Step
• Single / Double Ended Single
• Recommended Safety Equipment Safety Glasses
• Point Rapid Strike Tip
• Self Feeding No
• Impact Rated No
• Set / Individual Individual
• Cutter Geometry Dual Straight Flute
• Drill Bit Finish Black Oxide
• Shank Style 3-Flat
• Overall Bit Length 3.112
• Bit Length 3.11
• Style 3 Flats Shank
• Drilling Depth (in) 2.375
• Number of Flutes 2
• Number of Holes 13
• Steps 13
• Step Thickness 1/8 po
• Drill Bit Size 1/8 po, 5/32 po, 3/16 po, 7/32 po, 1/4 po, 9/32 po, 5/16 po, 11/32 po, 3/8 po, 13/32 po, 7/16 po, 15/32 po, 1/2 po
• Size Range 1/8 po to 1/2 po
• Shank Diameter 1/4 po
• Bit Diameter 1/2 po
• Flute Length (in) 0.5
• Shank Diameter Inches 0.25