--- product_id: 6785727 title: "Irwin Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, Cobalt Alloy Steel, 3/8-Inch Shank (10234CB)" brand: "irwin" price: "£49.90" currency: GBP in_stock: true url: https://www.desertcart.co.uk/products/6785727-irwin-tools-irwin-step-drill-bit-3-16-inch-to store_origin: GB region: United Kingdom --- # 12 hole sizes SpeedPoint tip Cobalt alloy steel Irwin Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, Cobalt Alloy Steel, 3/8-Inch Shank (10234CB) **Brand:** irwin **Price:** £49.90 **Availability:** ✅ In Stock ## Summary > 🔧 Drill Like a Pro with Irwin's Precision! ## Quick Answers - **What is this?** Irwin Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, Cobalt Alloy Steel, 3/8-Inch Shank (10234CB) by irwin - **How much does it cost?** £49.90 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/6785727-irwin-tools-irwin-step-drill-bit-3-16-inch-to) ## Best For - irwin enthusiasts ## Why This Product - Trusted irwin brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smooth Finishing:** Single-flute cutting edge guarantees true round holes with a clean finish every time. - • **Effortless Starts:** SpeedPoint tip prevents walking, ensuring fast starts without the need for pilot holes. - • **Durable Construction:** Crafted from cobalt alloy steel for extended cutting edge life, perfect for stainless steel. - • **Professional Quality:** Engineered for the demanding needs of professionals, making it a must-have in your toolkit. - • **Versatile Drilling Power:** Drills 12 different hole sizes from 3/16" to 7/8" with precision. ## Overview The Irwin Tools IRWIN Step Drill Bit is a high-performance tool made from cobalt alloy steel, designed to drill 12 different hole sizes ranging from 3/16-inch to 7/8-inch. Its SpeedPoint tip ensures quick and accurate starts, while the single-flute cutting edge delivers smooth, clean holes, making it ideal for professionals working with stainless steel. ## Description Product Description IRWIN Tools 10234CB Unibit Cobalt Alloy Steel Sheet Metal Step Drill Bit offers 12 different hole sizes in one single bit, from 3/16" to 7/8" in increments of 1/16". Ideal for drilling true, round holes with a smooth, clean finish in a variety of materials like stainless steel, sheet metal, aluminum, fiberglass, plastics, plexiglass, and wood. The Cobalt Alloy Steel high speed steel construction provides increased life of the cutting edge which makes it ideal for tough applications like stainless steel drilling. The SpeedPoint tip penetrates fast and doesn't require a pilot/starting hole. The 3/8" hex shank provides secure grip in the drill chuck. Permanent laser-etched sizes inside flute are easy to read for precise control during the hole enlarging process. Product made in USA. From the Manufacturer Irwin Unibit Cobalt is made of high speed steel, this step drill bit will last longer in the toughest of materials. Irwin Industrial Tools 10234CB 4 12 Hole Sizes (3/16-Inch-7/8-Inch), 1/16-Inch Increments ## Features - Cobalt Alloy Steel high speed steel for extended cutting edge life makes it ideal for drilling stainless steel - Drills 12 different hole sizes, from 3/16" to 7/8" by 16ths - SpeedPoint tip prevents "walking," gets fast starts, and eliminates the need for pilot/starting hole - Single-flute cutting edge drills true round holes with smooth, clean finish ## Images ![Irwin Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, Cobalt Alloy Steel, 3/8-Inch Shank (10234CB) - Image 1](https://m.media-amazon.com/images/I/51o2G16F0WL.jpg) ![Irwin Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, Cobalt Alloy Steel, 3/8-Inch Shank (10234CB) - Image 2](https://m.media-amazon.com/images/I/61m9VQWyQEL.jpg) ![Irwin Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, Cobalt Alloy Steel, 3/8-Inch Shank (10234CB) - Image 3](https://m.media-amazon.com/images/I/61P1njCbLtL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Frequently Bought Together - Irwin Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, Cobalt Alloy Steel, 3/8-Inch Shank (10234CB) - Irwin Tools IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) Silver|Silver metallic --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/6785727-irwin-tools-irwin-step-drill-bit-3-16-inch-to](https://www.desertcart.co.uk/products/6785727-irwin-tools-irwin-step-drill-bit-3-16-inch-to) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-18*