--- product_id: 60478574 title: "3-1/2\" Inch Robertson Square SQ # 1 Power Impact Bit 10 pack 1/4 Hex" brand: "uffy" price: "฿1853" currency: THB in_stock: true reviews_count: 8 url: https://www.desertcart.co.th/products/60478574-3-1-2-inch-robertson-square-sq-1-power-impact store_origin: TH region: Thailand --- # 3.5" Length 58-60 HRC S2 Material 3-1/2" Inch Robertson Square SQ # 1 Power Impact Bit 10 pack 1/4 Hex **Brand:** uffy **Price:** ฿1853 **Availability:** ✅ In Stock ## Summary > 🔧 Elevate Your Tool Game with Unbeatable Quality! ## Quick Answers - **What is this?** 3-1/2" Inch Robertson Square SQ # 1 Power Impact Bit 10 pack 1/4 Hex by uffy - **How much does it cost?** ฿1853 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/60478574-3-1-2-inch-robertson-square-sq-1-power-impact) ## Best For - uffy enthusiasts ## Why This Product - Trusted uffy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Value Pack:** Get 10 bits to keep your projects running smoothly. - • **Extended Lifespan:** Core hardened with a black manganese phosphate coating. - • **Industrial Strength:** Trusted by leading manufacturers across the US. - • **Unmatched Durability:** Crafted from S2 material, these bits are built to last. - • **Precision Engineering:** Designed for a perfect fit with #1 Square/Robertson screws. ## Overview This 10-pack of 3-1/2" Inch Robertson Square SQ # 1 Power Impact Bits is engineered for industrial use, featuring a Rockwell hardness of 58-60 HRC and made from premium S2 material. With core hardening and a black manganese phosphate coating, these bits promise extended life and reliability for all your projects. ## Description 3-1/2" Length | Standard 1/4'' Hex Shank | Tip: #1 Square Robertson |Round shank diameter: 15/64" | 10 Pcs. Total ## Features - 3 1/2” Length - # 1 - Square/ Robertson Impact Drive - Used by some of the largest manufactureres in the US. Industrial quality. - 58-60 HRC (Rockewll Hardness). S2 Material - Core hardened and black manganese phosphate coating for extended life ## Images ![3-1/2" Inch Robertson Square SQ # 1 Power Impact Bit 10 pack 1/4 Hex - Image 1](https://m.media-amazon.com/images/I/7162e9JWsLL.jpg) ![3-1/2" Inch Robertson Square SQ # 1 Power Impact Bit 10 pack 1/4 Hex - Image 2](https://m.media-amazon.com/images/I/61auwChkHdL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Good quality product *by D***E on Reviewed in the United States on December 22, 2022* I install commercial playgrounds and I use these pits very often. Other bits that I have purchased usually last through 1 install. I have used one for 2 installs, and it barely shows any wear. Very pleased ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Best Bits you could ever buy *by C***G on Reviewed in the United States on October 15, 2019* I use around 5000 Kreg screws a year. The regular Kreg bit would not get thru 100 screws before it started to show the tip begin to round and it would start to slip. These bits on the other hand are unbelievable. It have put in around 500 screws. I still have to wiggle it a little to get the bit out of the screw head. I bought a pack of 10 thinking these would only last a little longer than the Kreg screws. Boy was I ever wrong! With buying a pack of 10 it's going to be several years before I have buy more. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Best bit I’ve used so far. *by A***P on Reviewed in the United States on March 31, 2019* I work on RV’s for a living and 99% of the screws used in anything RV related are square bits. I had used a number of other branded bits over the years and decided to pick these up for spares Incase anyone in the shop needed one. These turned out to be better than the other bits I was using. I’m still using the same bit since the day these arrived and it shows no sign of wear. Meanwhile my diehard Snap-On fan coworker seems to sheer one of his every few weeks.Great bits and don’t have a single regret. I’d willingly pay more for these. --- ## 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.th/products/60478574-3-1-2-inch-robertson-square-sq-1-power-impact](https://www.desertcart.co.th/products/60478574-3-1-2-inch-robertson-square-sq-1-power-impact) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-24*