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Brand: IRWIN
SKU: 4A946

Step Drill Bit: 13 Hole Sizes, 1/8 in to 1/2 in, 1/32 in Step Increments, Black Oxide Finish

Condition: Good | Condition Details: Package damage
Sold out
Original price $5.24 - Original price $5.24
Original price 30.8
$5.24 - $5.24
Current price $5.24

$20.94 Generated In Scholarship



IRWIN MODEL UNIBIT 1, Hex-shank impact-rated step drill bits feature a hex shank and install into impact drills with standard three-jaw chucks. They are also known as impact step bits. These cone-shaped bits have steps of increasing diameter marked along their cutting head. As each bit is pushed into a piece of sheet metal or other thin material, each step on the bit widens the hole. The bits also have a self-starting split point that prevents the bits from moving, or walking, when starting to drill, which eliminates the need for using a center drill to create a starter hole before drilling.

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