--- product_id: 476304114 title: "Tools 4 Piece Impact Adaptor Set 1/4\" 3/8\" 1/2\" Step up/Down Reducer 3504" brand: "us pro" price: "177 kr" currency: NOK in_stock: true reviews_count: 13 url: https://www.desertcart.no/products/476304114-tools-4-piece-impact-adaptor-set-1-4-3-8 store_origin: NO region: Norway --- # Black phosphate finish resists corrosion & abrasion 4 precision adaptors for versatile drive sizes Chromium-vanadium steel for ultimate durability Tools 4 Piece Impact Adaptor Set 1/4" 3/8" 1/2" Step up/Down Reducer 3504 **Brand:** us pro **Price:** 177 kr **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade Your Toolbox, Upgrade Your Game ## Quick Answers - **What is this?** Tools 4 Piece Impact Adaptor Set 1/4" 3/8" 1/2" Step up/Down Reducer 3504 by us pro - **How much does it cost?** 177 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/476304114-tools-4-piece-impact-adaptor-set-1-4-3-8) ## Best For - us pro enthusiasts ## Why This Product - Trusted us pro brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** Crafted from premium chromium-vanadium steel, these adaptors withstand heavy-duty use without wear. - • **Trusted by Pros:** Ranked top 100 in Industrial Power Tool Accessories with a stellar 4.6-star rating from 900+ users—join the elite who rely on US PRO. - • **Compact & Ready for Action:** Compact 4-piece set fits perfectly in your toolbox, making upgrades or replacements hassle-free. - • **Corrosion-Resistant Finish:** Black phosphate coating ensures long-lasting protection against rust and abrasion, keeping your tools looking sharp. - • **Seamless Drive Size Conversion:** Effortlessly switch between 1/4", 3/8", and 1/2" impact drives to tackle any job with precision. ## Overview The US PRO Tools 4 Piece Impact Adaptor Set (Model 3504) offers versatile step-up and step-down drive conversions between 1/4", 3/8", and 1/2" sizes. Made from durable chromium-vanadium steel with a corrosion-resistant black phosphate finish, this compact set is designed for professional-grade performance and longevity. Highly rated and trusted by industry pros, it’s the perfect addition to any serious toolkit. ## Description Set of 4 adaptors for converting impact drive sizes.1/2'' F x 3/8'' M3/8'' F x 1/2'' M3/8'' F x 1/4'' M1/4'' F x 3/8'' MMade from chromium-vanadium steel for strength and durability and helps resist abrasion, oxidation, and corrosionBlack phosphate finishThis high quality Adaptor Set comes to you brand new with retail packaging/tagThis is a perfect addition / replacement to any toolbox or workshop ## Features - 1/2" F x 3/8" M - 3/8" F x 1/2" M - 3/8" F x 1/4" M - 1/4" F x 3/8" M ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0BFX3WT2T | | Best Sellers Rank | 342 in Business, Industry & Science (See Top 100 in Business, Industry & Science) 72 in Industrial Power Tool Accessories | | Bit Compatibilities | 1/4 inch | | Bit Set Composition | Bit Set | | Brand | US PRO | | Country Of Origin | China | | Customer Reviews | 4.6 4.6 out of 5 stars (903) 4.6 out of 5 stars | | Drive Bit Shank Style | Hex | | Drive End Style | Hex | | Drive System | External Hex | | Finish | Black Phosphate Finish | | Item Length | 1.27 Centimetres | | Item Type Name | US PRO Tools 4 Piece Impact Adaptor Set 1/4" 3/8" 1/2" Step up/Down Reducer | | Manufacturer | US PRO | | Material | Chrome Vanadium Steel | | Model Number | 3504 | | Number Of Items | 4 | | Number Of Packs | 1 | | Number Of Pieces | 4 | | Part Number | 3504 | | Set Name | US PRO Tools 4 Piece Impact Adaptor Set | | Unit Count | 1.0 count | ## Product Details - **Brand:** US PRO - **Finish type:** Black Phosphate Finish - **Item length:** 1.27 Centimetres - **Material:** Chrome Vanadium Steel - **Number of pieces:** 4 ## Images ![Tools 4 Piece Impact Adaptor Set 1/4" 3/8" 1/2" Step up/Down Reducer 3504 - Image 1](https://m.media-amazon.com/images/I/41d61oqe29L.jpg) ![Tools 4 Piece Impact Adaptor Set 1/4" 3/8" 1/2" Step up/Down Reducer 3504 - Image 2](https://m.media-amazon.com/images/I/41SWkjegf8L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great value and quality *by on Reviewed in the United Kingdom 19 July 2026* Great value and did the job I needed them for. ### ⭐⭐⭐⭐⭐ Versatile adapter *by on Reviewed in the United Kingdom 18 July 2026* Quality product in usable storage clip. Have stood up to the use i have inflicted on them, converting from diferent size sockets with impact driver. ### ⭐⭐⭐⭐⭐ A Must Have *by on Reviewed in the United Kingdom 5 February 2026* Gives you the flexibility you need for all sockets. People say about them breaking but if you’re putting torque through a tiny adapter, it’s going to break so need to be used for their intended use. So they’re a decent buy for the money and recommended for any size toolbox! ## Frequently Bought Together - US PRO Tools 4 Piece Impact Adaptor Set 1/4" 3/8" 1/2" Step up/Down Reducer 3504 - Sealey Ak730 Breaker Bar 600Mm 1/2Sq Drive --- ## 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/476304114-tools-4-piece-impact-adaptor-set-1-4-3-8](https://www.desertcart.no/products/476304114-tools-4-piece-impact-adaptor-set-1-4-3-8) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-09-28*