HSS Step Drill Bit Set — 50 SAE Sizes, 1/8"–1-3/8", Tri-Flatted Shank (5-Piece)
HSS Step Drill Bit Set — 50 SAE Sizes, 1/8"–1-3/8", Tri-Flatted Shank (5-Piece)
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Fifty hole sizes from five bits. This high-speed steel step drill set covers everything from 1/8" to 1-3/8" — replacing a full drawer of individual drill bits with one compact case. Two-flute design deburrs during drilling, and tri-flatted shanks lock securely in power tool chucks with zero slip.
Cuts clean holes in sheet metal, plastic, aluminum, copper, and stainless steel. Use them for drilling new holes or expanding existing ones.
50 Sizes in 5 Bits Five step bits cover 50 hole sizes from 1/8" to 1-3/8". No bit changes between sizes — just drill deeper to step up.
Two-Flute Deburring Spiral flute design clears chips during drilling for clean, burr-free holes. Tri-flatted shanks prevent chuck slip.
HSS Construction High-speed steel handles metal, plastic, and wood. Two shank sizes: 1/4" and 3/8" for compatibility with standard chucks.
What's Included
- 1× 6-Step Bit (1/4" shank): 3/16"–1/2"
- 1× 13-Step Bit (1/4" shank): 1/8"–1/2"
- 1× 9-Step Bit (3/8" shank): 1/4"–3/4"
- 1× 10-Step Bit (3/8" shank): 1/4"–1-3/8"
- 1× 12-Step Bit (3/8" shank): 3/16"–7/8"
- Blow-Mold Carrying Case
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What is your return policy?
We accept returns within 30 days of delivery. To be eligible, items must be unused, in their original packaging, and accompanied by proof of purchase. If the item is faulty or damaged, we will cover the return shipping and provide a replacement or full refund.
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What are your sizing options?
This product does not require sizing. However, if you’re shopping for wearables or accessories on our store, detailed size charts are available on each product page to help you find the perfect fit.
