--- product_id: 83145680 title: "SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite, Marble and Masonry Shaping, Grooving, Iron and Steel Grinding Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm" brand: "shdiatool" price: "€ 56.36" currency: EUR in_stock: true reviews_count: 13 category: "Shdiatool" url: https://www.desertcart.pt/products/83145680-shdiatool-diamond-grinding-cup-wheel-4-1-2-inch-granite store_origin: PT region: Portugal --- # 30/40 coarse diamond grit for aggressive grinding Fits 7/8 inch arbor, max 8063 RPM for precision Vacuum brazed tech for faster speed & longer life SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite, Marble and Masonry Shaping, Grooving, Iron and Steel Grinding Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm **Brand:** shdiatool **Price:** € 56.36 **Availability:** βœ… In Stock ## Summary > πŸ’Ž Grind like a pro, finish like a boss! ## Quick Answers - **What is this?** SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite, Marble and Masonry Shaping, Grooving, Iron and Steel Grinding Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm by shdiatool - **How much does it cost?** € 56.36 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/83145680-shdiatool-diamond-grinding-cup-wheel-4-1-2-inch-granite) ## Best For - shdiatool enthusiasts ## Why This Product - Trusted shdiatool brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Durability Meets Safety:** Vacuum brazed construction ensures longer life and safer operation - β€’ **Versatile Wet or Dry Use:** Adaptable for both wet and dry grinding tasks, maximizing job site flexibility - β€’ **Precision Fit for Pro Tools:** Seamlessly fits standard 7/8 inch arbor angle grinders - β€’ **Turbocharged Grinding Power:** 30/40 coarse diamond grit delivers rapid material removal - β€’ **Unmatched Multi-Material Mastery:** Grind granite, marble, steel & more with one wheel ## Overview The SHDIATOOL Diamond Grinding Cup Wheel is a 4-1/2 inch, vacuum brazed grinding disc designed for high-performance shaping and grinding of granite, marble, masonry, iron, and steel. Featuring a coarse 30/40 diamond grit and compatible with 7/8 inch arbor angle grinders running up to 8063 RPM, it offers aggressive material removal, durability, and versatility for both wet and dry applications. ## Description Buy SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite, Marble and Masonry Shaping, Grooving, Iron and Steel Grinding Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm: Surface Grinding Wheels - desertcart.com βœ“ FREE DELIVERY possible on eligible purchases Review: Consistent, sturdy, long lasting, effortless - Used this disk for roughly three months or so intentionally trying to kill it, its lost some effectiveness in areas where its been heavily used but still works very well with a bit of pressure and is basically new in areas of the disk that haven't seen as much use. I'm an Ironworker and it has been invaluable as a tool, it rips through galvanization on iron without putting pits in metal, can be used to make cuts if you're in a bind just have to go slow, and can reliable grind down welds flush with existing metal. It is kind of heavy and thick so the only worry long term is it damaging your grinder or wearing it out, but with that it dose not require hardly any pressure at all to do its job so your tool will never really be bogged down by it so im not sure on that yet, ill update this if I can in the future. Pretty solid would recommend for the job scope of Ironworking. Review: Works great - works great. Good product ## Features - 1.Application: Dry or Wet working,Multi-purpose for iron steel granite marble natural stone ceramic and even steel grinding - 2. Size: 1pc Diameter 115mm (4-1/2 inch), Bore 22.23mm (7/8 inch),Diamond grit 30/40 - 3. High Quality: 30/40 Coarse high quality Diamond grain ensure aggressive working performance - 4. Durablity: Vacuum Brazed Technology provide faster grinding Speed and longer working life and safer operation - 5. Machine: 7/8 inch arbor is suitable for angle grinder, the recommend speed is 8063 RPM ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B078XS2LTM | | Best Sellers Rank | #31,916 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #51 in Grinding Discs | | Brand | SHDIATOOL | | Brand Name | SHDIATOOL | | Compatible Devices | Angle Grinder | | Compatible Material | Alloy Steel, Ceramic, Iron, Marble | | Construction Type | Grinding | | Customer Reviews | 4.6 out of 5 stars 271 Reviews | | Grit Material | Ceramic, Diamond | | Grit Material Type | Ceramic, Diamond | | Grit Number | 40 | | Grit Type | Coarse | | Industry Standard Identifier | 718760494778 | | Item Diameter | 4.5 inches | | Item Dimensions | 4.5 x 4.5 x 0.04 inches | | Item Dimensions L x W | 4.5"L x 4.5"W | | Item Thickness | 0.04 inches | | Item Weight | 10.24 ounces | | Manufacturer | SHANGHAI DIATOOL CO., LTD. | | Material Type | Artificial diamond and Steel body | | Maximum Rotational Speed | 8063 rpm | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | 43239-60088 | | Product Dimensions | 4.5"L x 4.5"W | | Recommended Uses For Product | Grinding | | UPC | 718760494778 | | Unit Count | 1 Count | ## Product Details - **Brand:** SHDIATOOL - **Compatible Devices:** Angle Grinder - **Grit Material:** Ceramic, Diamond - **Grit Type:** Coarse - **Product Dimensions:** 4.5"L x 4.5"W ## Images ![SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite, Marble and Masonry Shaping, Grooving, Iron and Steel Grinding Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm - Image 1](https://m.media-amazon.com/images/I/810U1aZ1m6L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can this convex grinding wheel be used to remove thick rust on iron or flatten steel weld seams?** A: Yes. While it excels at granite shaping, the vacuum brazed tech and #30/40 grains allow this convex disc to effortlessly grind heavy rust, zinc coatings, and tough steel welds without clogging. Perfect for mixed-material jobsites. **Q: What size arbor hole does it have? Will it fit my angle grinder?** A: It features a universal 7/8"(22.23mm) arbor to fit standard grinders. Note: The 4" disc includes an extra washer to fit 5/8" spindles too. Please select your matching disc diameter (4", 4.5", or 5") based on your grinder guard size. **Q: Is this grinding wheel flat or convex?** A: It has a unique convex (curved "flying saucer") profile. Unlike flat wheels, this convex shape gives you maximum control for stone grooving, curved contouring, artistic carving, and smoothly shaving down uneven surfaces. **Q: Does it emit strong odors or a storm of sparks?** A: No. Compared to ordinary resin wheels, our vacuum brazed diamond technology drastically reduces friction. This results in significantly fewer sparks, cooler grinding, and absolutely no harsh odorsβ€”making your workspace safer. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Consistent, sturdy, long lasting, effortless *by C***E on February 2, 2026* Used this disk for roughly three months or so intentionally trying to kill it, its lost some effectiveness in areas where its been heavily used but still works very well with a bit of pressure and is basically new in areas of the disk that haven't seen as much use. I'm an Ironworker and it has been invaluable as a tool, it rips through galvanization on iron without putting pits in metal, can be used to make cuts if you're in a bind just have to go slow, and can reliable grind down welds flush with existing metal. It is kind of heavy and thick so the only worry long term is it damaging your grinder or wearing it out, but with that it dose not require hardly any pressure at all to do its job so your tool will never really be bogged down by it so im not sure on that yet, ill update this if I can in the future. Pretty solid would recommend for the job scope of Ironworking. ### ⭐⭐⭐⭐⭐ Works great *by R***S on July 24, 2026* works great. Good product ### ⭐⭐⭐⭐⭐ good *by E***N on January 6, 2026* This worked better than anticipated. Ive only used it for one project, carving some limestone, but it ate it pretty fast and seemed to hold up well. I dont have anything else to compare it to in terms of carbide/stone carving, but it cut as good or better than a 36 grit flap disc cutting wood. ## Frequently Bought Together - SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm - SHDIATOOL 4-1/2 Inch Diamond Cutting Grinding Disc Fits 5/8-11 Arbor for Marble Ceramic Double Sided Vacuum Brazed Fast Cutting Shaping Grinding Wheel - SHDIATOOL 3 Inch Profile Hand Diamond Wheel Height 15mm Convex Curve Edge Grinding for Stone Marble Granite Rock --- ## 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.pt/products/83145680-shdiatool-diamond-grinding-cup-wheel-4-1-2-inch-granite](https://www.desertcart.pt/products/83145680-shdiatool-diamond-grinding-cup-wheel-4-1-2-inch-granite) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-10*