--- product_id: 83430630 title: "3-1/2\" Wet Drill Core Bits for Concrete and Hard Masonry, 10mm Segment Height, 14\" Drilling Depth, 1-1/4\"-7 Arbor, Wet Only" brand: "ediamondtools" price: "£90.97" currency: GBP in_stock: true reviews_count: 10 url: https://www.desertcart.co.uk/products/83430630-3-1-2-wet-drill-core-bits-for-concrete-hard store_origin: GB region: United Kingdom --- # Wet Only 14" Depth 1-1/4"-7 Arbor 3-1/2" Wet Drill Core Bits for Concrete and Hard Masonry, 10mm Segment Height, 14" Drilling Depth, 1-1/4"-7 Arbor, Wet Only **Brand:** ediamondtools **Price:** £90.97 **Availability:** ✅ In Stock ## Summary > 💎 Drill Like a Pro with Precision and Power! ## Quick Answers - **What is this?** 3-1/2" Wet Drill Core Bits for Concrete and Hard Masonry, 10mm Segment Height, 14" Drilling Depth, 1-1/4"-7 Arbor, Wet Only by ediamondtools - **How much does it cost?** £90.97 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/83430630-3-1-2-wet-drill-core-bits-for-concrete-hard) ## Best For - ediamondtools enthusiasts ## Why This Product - Trusted ediamondtools brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Wet-Only Advantage:** Designed for wet drilling, reducing dust and enhancing durability. - • **Unmatched Precision:** Engineered with #30/40 diamond grit for flawless drilling. - • **Deep Dive Capability:** Achieve a remarkable 14" drilling depth effortlessly. - • **User-Friendly Design:** 1-1/4"-7 threaded for easy attachment and stability. - • **Versatile Performance:** Perfect for concrete, masonry, and hard brick applications. ## Overview The 3-1/2" Wet Drill Core Bit is a high-performance tool designed for professionals tackling tough materials like concrete and masonry. With a 10mm segment height and a 14" drilling depth, this bit ensures precision and efficiency in every project. Its wet-only design minimizes dust and maximizes longevity, making it an essential addition to any contractor's toolkit. ## Description 3-1/2" Wet Drill Core Bits for Concrete and Hard Masonry, 10mm Segment Height, 14" Drilling Depth, 1-1/4"-7 Arbor, Wet Only ## Features - About this item - #30/40 diamond grit, designed for drilling hard concrete, masonry, hard brick, and other hard materials Diameter: 3-1/2 inches Thread: 1-1/4"-7 threaded Drilling depth: 14" Drilling method: WET only ›See more product details ## Images ![3-1/2" Wet Drill Core Bits for Concrete and Hard Masonry, 10mm Segment Height, 14" Drilling Depth, 1-1/4"-7 Arbor, Wet Only - Image 1](https://m.media-amazon.com/images/I/51e46z6PQkL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ don't push, the bit will do the work *by M***N on Reviewed in the United States on December 30, 2017* I needed to drill a hole through a 8" thick 45 year old concrete wall to run the lines for my new heat pump. I picked up this bit, a 1-1/4"-7 Male to 5/8"-11 Female adapter, and a Makita 9566CV variable speed angle grinder. I created a plywood jib to hold the bit in place had an assistant run the garden hose while I set it against the wall and turned it loose.Eight inches of concrete stretched my little angle grinders abilities. As the grinder motor heated up we took a couple "lets go work on something else" breaks. As the bit gets deeper into the wall, it gets harder to keep the bit perfectly aligned and so extra "drag" starts making the amount of work to be done much higher. When I figured that out, I busted out the core slug which made a large difference, and was able to finish up the drill without any further overheating of the grinder. ### ⭐⭐⭐⭐⭐ This was money well spent. *by J***. on Reviewed in the United States on January 29, 2022* I used this core drill to make the holes necessary to install a radon mitigation system in my house. I used this 5” core drill to make a hole large enough to install 4” schedule 40 PVC pipe, which has a 4 1/2” OD. I drilled through a 4” basement slab and a 6” concrete side wall and the drill still looks to be in great shape. I used a heavy duty Milwaukee hammer drill to drive this, but I did not use the hammer feature. My wife sprayed water into the drilling area using a pump up lawn sprayer during the drilling process. It seemed like a pretty slow speed gave the best results. This took a while to drill through and I had to cool off the drill motor a number of times during the job. This was money well spent. ### ⭐⭐⭐⭐⭐ Works Great *by J***L on Reviewed in the United States on December 5, 2021* So far drilled 20+ holes and have no issues at all. I bought new and used bits and still using the first bit --- ## 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/83430630-3-1-2-wet-drill-core-bits-for-concrete-hard](https://www.desertcart.co.uk/products/83430630-3-1-2-wet-drill-core-bits-for-concrete-hard) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-12*