Single flute cutting edge for greater control through steps Hex shank prevents slipping in drill chuck New SpeedPoint® tip penetrates faster than previous Unibits and prevents walking IRWIN® Unibit® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel… Why Pros Choose Vise-Grip / Irwin Industrial Tools Self-Starting, 13 Hole Sizes Single-flute cutting edge for greater control through steps Hex shank prevents slipping in drill chuck Also available with (TiN) coating for longer life New SpeedPoint tip penetrates faster than previous Unibits and prevents walking Compatibility Compatible substrates: Steel, Aluminum, Wood, E-Coat, Copper, Brass, Stainless. Specifications Technical specifications for Irwin® Unibit® 10231 Self-Starting #1 Step Drill Bit, 1/8 to 1/2 in Dia, 3-3/16 in OAL, High Speed Steel Part No. 1 Product Line VGP MFR Model 10231 Standard/Approvals California Prop65 Warning: Cancer and Reproductive Harm Manufacturer Vise-Grip / Irwin Industrial Tools UPC 038548101019 Brand Irwin® Unibit® Overall Length (in) 3-3/16 Applicable Materials Aluminum, Brass, Copper, Plastic and Laminates, Stainless Steel Finish Titanium Nitride (TiN) Coated Material High Speed Steel Type Self-Starting, 13 Hole Sizes About Vise-Grip / Irwin Industrial Tools Vise-Grip / Irwin Industrial Tools is a trusted manufacturer of professional auto body and refinish products used by collision repair shops and restoration specialists across North America. Frequently Asked Questions What surfaces can Vise-Grip / Irwin Industrial Tools VGP be used on?Vise-Grip / Irwin Industrial Tools VGP is compatible with Steel, Aluminum, Wood, E-Coat, Copper, Brass. Always ensure the surface is properly cleaned, degreased, and sanded before application to achieve the strongest adhesion and a professional finish. How fast does autofxmart ship Vise-Grip / Irwin Industrial Tools VGP?Most in-stock orders for Vise-Grip / Irwin Industrial Tools VGP ship the same or next business day from our US warehouse. Expedited options are available at checkout. Freight-class items may require an additional 1–2 days for carrier pickup. Is this Vise-Grip / Irwin Industrial Tools product genuine?Yes. autofxmart is an authorized distributor of Vise-Grip / Irwin Industrial Tools products. Every unit is factory-fresh, sealed, and backed by the manufacturer's standard warranty. If you have a concern, contact [email protected] and we will make it right. What is the manufacturer part number (MPN) for Vise-Grip / Irwin Industrial Tools VGP?The MPN for Vise-Grip / Irwin Industrial Tools VGP is 1. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs. Documents & Safety hanson_60608_catalog.pdf IRWIN_62108_Catalog.pdf Why Buy from autofxmart Authorized distributor — authentic, factory-fresh stock. Fast US shipping — most orders ship within 1 business day. 30-day returns — buy with confidence. Pro-shop pricing — bulk discounts available on request. Expert support — questions? Email us at [email protected].