--- product_id: 10947961 title: "Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234)" brand: "irwin" price: "801 kr" currency: NOK in_stock: true category: "Irwin" url: https://www.desertcart.no/products/10947961-tools-irwin-step-drill-bit-3-16-inch-to-7 store_origin: NO region: Norway --- # 3-flatted hex shank prevents slipping in drill chuck 12-step sizes from 3/16" to 7/8" in 1/16" increments Industrial-grade molybdenum high-speed steel, heat treated Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234) **Brand:** irwin **Price:** 801 kr **Availability:** ✅ In Stock ## Summary > 🔧 Drill smarter, not harder—step up your precision game! ## Quick Answers - **What is this?** Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234) by irwin - **How much does it cost?** 801 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/10947961-tools-irwin-step-drill-bit-3-16-inch-to-7) ## 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 - • **No-Slip Confidence:** 3-flatted hex shank locks in place for steady, slip-free drilling every time. - • **SpeedPoint Tip Tech:** Starts fast and stays true—no walking, no center punch needed. - • **Unmatched Durability:** Heat-treated molybdenum steel stands up to tough materials and long projects. - • **One Bit, Endless Precision:** Drill 12 hole sizes without swapping bits—save time and stay in flow. - • **Lifetime-Backed Reliability:** Invest once, drill forever with Irwin’s full lifetime warranty. ## Overview The Irwin 10234 Step Drill Bit offers 12 precise hole sizes from 3/16" to 7/8" in 1/16" increments, crafted from heat-treated industrial-grade molybdenum high-speed steel for maximum durability. Featuring a SpeedPoint tip for fast, accurate starts without walking, and a 3-flatted hex shank to prevent slipping, this bit is ideal for drilling clean holes in thin materials like stainless steel, aluminum, brass, and plastic. Backed by a lifetime warranty, it eliminates the need for multiple drill bits, making it a must-have for professionals seeking efficiency and reliability. ## Description Product Description Irwin 10234 Unibit #4 12-Step High Speed Steel 3/8-inch Step Drill Bit, 1/16-inch Steps (3/16- to 7/8-inch) Save time by eliminating the need to change drills when drilling round holes in thin materials. Each smaller size drill also acts as a pilot for the next size. Made from industrial-grade high-speed molybdenum steel heat treated for maximum durability. Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates. SpeedPoint tip penetrates faster than previous Unibits and prevents walking. Non-skid tip does away with the need for center punches; 3-faltted hex shank prevents slipping in drill chuck. Drill diameters etched in flute for easy identification.. desertcart.com The Irwin 10234 UniBit #4 12-Step High Speed Steel Fractional Self-Starting Step Drill has a single-flute cutting edge to give you more control and produce true, round holes. Twelve holes range from 3/16 to 7/8 inches, in 1/16-inch increments. A non-skid tip does away with the need for center punches, while the three flatted shanks prevent slipping in the drill chuck. This drill is made from industrial-grade high-speed molybdenum steel heat treated for maximum durability, and it is ideal for work on thinner materials. The multiple steps mean you don't have to have a toolbox with specific size drill bits, and this drill is backed by a full lifetime warranty. From the Manufacturer The #4 UniBit Step Drill has 12 holes--3/16-inch to 7/8-inch hole sizes with increments of 1/16-inch- shank size is 3/8-inch. Each UniBit step drill has an easy-to-sharpen, non-skid tip which eliminates skidding and the need for center punching; the tip gives sure starts even on curved surfaces. The single-fluted cutting edge that you will find on the UniBit step drills helps assure true round holes and allows greater control. They are constructed of industrial grade high speed molybdenum steel and heat treated to assure maximum durability. The UniBit step drill has 3 flatted shanks, which prevents slipping in drill chuck. The multiple steps on each UniBit eliminates the need to maintain a toolbox full of specific size drill bits. Full lifetime warranty--each UniBit step drill is warranted to be free from defects in material and workmanship for the life of the tool, except for damage caused by abuse, misuse, or alteration. ## Features - Save time because you don't need to change drills for different-sized round holes in thin materials. Each drill acts as a pilot for the next size. - Made from industrial-grade high-speed molybdenum steel heat treated for maximum durability. SpeedPoint tip penetrates faster and prevents walking. - Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates. - Non-skid tip, no need for center punches. 3-faltted hex shank prevents drill chuck slipping. Drill diameters etched in flute for easy identification. - Backed by a full lifetime warranty. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00004THZ0 | | Best Sellers Rank | #37,888 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #58 in Step Drill Bits #1,148 in Drill Bits | | Brand | IRWIN | | Brand Name | IRWIN | | Customer Reviews | 4.6 out of 5 stars 638 Reviews | | Cutting Angle String | 135 degrees | | Cutting Diameter | 9.53 millimeters | | Finish Type | Black Oxide | | Finish Types | Black Oxide | | Global Trade Identification Number | 00038548101040 | | Included Components | STEP DRILL #4 3/16-7/8" 12 SZ | | Item Type Name | STEP DRILL #4 3/16-7/8" 12 SZ | | Item Weight | 0.27 g | | Manufacturer | IRWIN | | Material | High Speed Steel (HSS) | | Material Type | High Speed Steel (HSS) | | Minimum Bore Diameter | 0.19 inches | | Model | 10234 | | Number of Flutes | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Part Number | 10234 | | Point Style | Taper Point | | Set Name | Single Item | | Shank Type | 3-Flat | | Surface Recommendation | Aluminum,Brass,Copper,Steel,Wood | | Tool Flute Type | Spiral | | UPC | 795092534631 038548101040 752277668864 013317062265 640024790879 785533446074 | | Unit Count | 1 Count | | Warranty Description | Limited lifetime | ## Product Details - **Brand:** IRWIN - **Finish Type:** Black Oxide - **Material:** High Speed Steel (HSS) - **Shank Type:** 3-Flat - **Tool Flute Type:** Spiral ## Images ![Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234) - Image 1](https://m.media-amazon.com/images/I/61qcRUvI8rL.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, 3/8-Inch Shank (10234) - Irwin Tools IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) Silver|Silver metallic - Jerax tools 3/16-7/8 Inch Step Drill Bit, M2 HSS Spiral Grooved Step Bit for Stainless Steel, Metal, Wood, Plastic --- ## 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.no/products/10947961-tools-irwin-step-drill-bit-3-16-inch-to-7](https://www.desertcart.no/products/10947961-tools-irwin-step-drill-bit-3-16-inch-to-7) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-11-13*