--- product_id: 11691133 title: "Step Drill Bit, Impact Ready, 1/8-Inch-1/2-Inch (DWA1783IR)" brand: "dewalt" price: "NT$2067" currency: TWD in_stock: true reviews_count: 13 category: "Dewalt" url: https://www.desertcart.tw/products/11691133-step-drill-bit-impact-ready-1-8-inch-1-2 store_origin: TW region: Taiwan --- # Laser-engraved step numbers for precision Split-point tip for faster starts Titanium Nitride Coating for durability Step Drill Bit, Impact Ready, 1/8-Inch-1/2-Inch (DWA1783IR) **Brand:** dewalt **Price:** NT$2067 **Availability:** βœ… In Stock ## Summary > πŸ”§ Drill Smarter, Not Harder β€” The Pro’s Choice for Speed & Precision ## Quick Answers - **What is this?** Step Drill Bit, Impact Ready, 1/8-Inch-1/2-Inch (DWA1783IR) by dewalt - **How much does it cost?** NT$2067 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/11691133-step-drill-bit-impact-ready-1-8-inch-1-2) ## Best For - dewalt enthusiasts ## Why This Product - Trusted dewalt brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Unmatched Durability:** Titanium Nitride coating extends bit life and resists wear under heavy use. - β€’ **Precision Speed Start:** Split-point tip ensures instant contact and faster drilling, saving you time on every project. - β€’ **Visible Step Markings:** Laser-engraved numbers enhance step visibility, so you drill with confidence and accuracy every time. - β€’ **Effortless Chip Removal:** Two-flute spiral design optimizes debris ejection, keeping your work clean and efficient. - β€’ **Impact Driver Optimized:** 1/4-inch hex shank engineered for seamless compatibility with impact drivers and rotary drills. ## Overview The DEWALT Step Drill Bit (DWA1783IR) features a titanium nitride coating and a split-point tip for faster, cleaner drilling through metal. Its two-flute spiral design ensures superior chip removal, while laser-engraved step numbers provide clear size visibility. Optimized for impact drivers with a 1/4-inch hex shank, this bit delivers professional-grade durability and precision for metalworking tasks. ## Description Equipped with a split-point tip that helps to increase speed and starts on contact, DEWALT Metal Drill Bit Set features an innovative double-spiral flute design for long life and outstanding chip removal. Laser-engraved numbers helps to increase step visibility. Optimized for impact drivers. Works with rotary drills. Review: Good - Use it often, really like the bit. Review: Holy cow batman, this thing works great! - I don't know what it's made of, but it is hard and sharp. Goes through structural steel so much better and faster than other drill bits that are supposed to be good. I haven't tried it on stainless steel yet, but the holes it drills into structural steel are comparable to how good individual M35 bits perform on structural steel, and since those same M35 bits will go through stainless, then I'm confident this Dewalt step bit will go through stainless steel just as well. I will have an opportunity to test it on stainless steel in about a week from now and can give an update afterwards. Update: I picked up 2 other step bits, one Oxmul M35 (5% cobalt) and one Stroton (6% cobalt). The Dewalt similarly outperformed those as well. I drilled stainless steel with the Dewalt and got a surprise---it quickly accelerated in expanding/drilling out the hole once a pilot hole was created. All drilling was done with moderate even pressure at relatively slow speed. ## Features - Titanium Nitride Coated two flute spiral design provides longer life and better chip removal for the DEWALT drill bit set - Split point tip of the drill bit increases speed - Laser engraved numbers increases step visiblity - 1/4-inch hex shank - Optimized for impact driver usage ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0090IHBL4 | | Assembled Diameter | 0.125 inches;0.5 Inches | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #21,971 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #40 in Step Drill Bits | | Brand | DEWALT | | Color | Multi | | Customer Reviews | 4.7 4.7 out of 5 stars (1,751) | | Cutting Angle String | 135 Degrees | | Cutting Diameter | 0.125 inches;0.5 Inches | | Date First Available | August 21, 2012 | | Finish | Titanium Nitride | | Finish Type | Titanium Nitride | | Global Trade Identification Number | 00885911294065 | | Included Components | Dewalt - DWA1783IR | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 0.16 ounces | | Item model number | DWA1783IR | | Manufacturer | DEWALT | | Material | Titanium Nitride Coated | | Measurement System | Inch | | Number of Flutes | 2 | | Number of Pieces | 1 | | Part Number | DWA1783IR | | Pattern | Solid | | Point Style | Split Point | | Shank Type | Hex | | Shape | Rectangular | | Size | 1/8" - 1/2" (Pack of 1) | | Style | 1/8" - 1/2" | | Surface Recommendation | Metal | | Tool Flute Type | Spiral | | UPC | 885911294065 | | Unit Count | 1.0 Count | ## Product Details - **Cutting Angle String:** 135 Degrees - **Cutting Diameter:** 0.5 Inches - **Finish Type:** Titanium Nitride - **Material:** Titanium Nitride Coated - **Shank Type:** Hex ## Images ![Step Drill Bit, Impact Ready, 1/8-Inch-1/2-Inch (DWA1783IR) - Image 1](https://m.media-amazon.com/images/I/51NTKj7E2nL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: Do these work with the small 1/4 drive impacts?** A: Yes, the DWA1790IR will work with the 1/4" Impact Driver. **Q: Why do they advertise this as 7/8-Inch-1-1/8-Inch. Looks like it also does up to 7/8?** A: I think the statement implies that is capable of doing an 7/8 hole for an 1/2 ko, and an 1 1/8 for a 1 inch ko. Also its a great step bit! **Q: has anyone used these with stainless steel ? im looking at regular use with ss electrical panels and sheeting up to 1/4" thick.** A: Yep, can be use with stainless steel like butter :) **Q: Does these bits come in a carry case or bag** A: No, this will not include a case or bag. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good *by M***L on December 3, 2025* Use it often, really like the bit. ### ⭐⭐⭐⭐⭐ Holy cow batman, this thing works great! *by V***S on January 12, 2023* I don't know what it's made of, but it is hard and sharp. Goes through structural steel so much better and faster than other drill bits that are supposed to be good. I haven't tried it on stainless steel yet, but the holes it drills into structural steel are comparable to how good individual M35 bits perform on structural steel, and since those same M35 bits will go through stainless, then I'm confident this Dewalt step bit will go through stainless steel just as well. I will have an opportunity to test it on stainless steel in about a week from now and can give an update afterwards. Update: I picked up 2 other step bits, one Oxmul M35 (5% cobalt) and one Stroton (6% cobalt). The Dewalt similarly outperformed those as well. I drilled stainless steel with the Dewalt and got a surprise---it quickly accelerated in expanding/drilling out the hole once a pilot hole was created. All drilling was done with moderate even pressure at relatively slow speed. ### ⭐⭐⭐⭐⭐ Top of the Line Bit, albeit pricey *by A***D on April 14, 2023* I began my project using bits from a local hardware discount store (Warrior brand) on sale for $8.99: drilled the first hole okay though I had to drill a pilot hole to get it started; then it got dull quickly and I struggled to do a couple more holes in my new fire pit ring. Watched a You Tube review of the Dewalt bits that showed it beating all other brands so I forked out the 5x cost to try it. Total "game changer"! The 3/16" starter step eliminated the pilot hole drilling other brands seem to require. This Dewalt bit cut through the steel like butter. I drilled a total of 56ea, 9/16" holes and the last hole cut just as easy as the first with no apparent dulling. Will never buy another drill bit brand; I'm completely sold. BTW, I also used an impact driver instead of your standard drill. Performed beautifully together! --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tw/products/11691133-step-drill-bit-impact-ready-1-8-inch-1-2](https://www.desertcart.tw/products/11691133-step-drill-bit-impact-ready-1-8-inch-1-2) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-04-23*