--- product_id: 354820204 title: "SHDIATOOL 4 Inch Diamond Grinding Cup Wheel for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor" brand: "shdiatool" price: "R1854" currency: ZAR in_stock: true reviews_count: 5 category: "Shdiatool" url: https://www.desertcart.co.za/products/354820204-shdiatool-4-inch-diamond-grinding-cup-wheel-for-granite-marble store_origin: ZA region: South Africa --- # Vacuum Brazed Diamond Grit #30/40 Up to 9072 RPM High-Speed Grinding Fits 7/8" Arbor with 5/8" Reducer SHDIATOOL 4 Inch Diamond Grinding Cup Wheel for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor **Brand:** shdiatool **Price:** R1854 **Availability:** ✅ In Stock ## Summary > 💎 Grind smarter, not harder — the pro’s choice for flawless finishes! ## Quick Answers - **What is this?** SHDIATOOL 4 Inch Diamond Grinding Cup Wheel for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor by shdiatool - **How much does it cost?** R1854 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/354820204-shdiatool-4-inch-diamond-grinding-cup-wheel-for-granite-marble) ## 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 - • **Dry or Wet Operation:** Adapt your workflow with a disc engineered for both dry and wet grinding, maximizing efficiency and safety. - • **Multi-Material Mastery:** Grind granite, marble, iron, steel, ceramic, and natural stone effortlessly—one wheel to rule all surfaces. - • **Universal Arbor Compatibility:** Seamlessly fits 7/8" angle grinders and includes a reducer washer for 5/8" arbors—versatility that keeps you ready for any job. - • **Long-Lasting Durability & Safety:** Vacuum brazed technology reduces sparks and extends wheel life, so you stay productive and protected on every project. - • **Precision Vacuum Brazed Diamond Edge:** Experience ultra-fast, aggressive grinding with premium #30/40 diamond grit that outperforms standard discs. ## Overview The SHDIATOOL 4 Inch Diamond Grinding Cup Wheel features a high-quality vacuum brazed #30/40 diamond grit for aggressive, fast grinding. Designed for angle grinders with a 7/8" arbor (plus 5/8" reducer), it excels on granite, marble, iron, steel, ceramic, and natural stone. Capable of dry or wet use, it offers enhanced durability, reduced sparks, and a maximum speed of 9072 RPM, making it a versatile, long-lasting tool for professionals seeking precision and efficiency. ## Description ======================= DESCRIPTION ====================== ​PRODUCT NAME: High Quality Vacuum Brazed Diamond Grinding Disc QUANTITY: 1pc only SPECIFICATION: Diameter 100mm (4"), Bore 22.23mm (7/8"), with reducer washer to 16mm bore (5/8") ,Diamond grit #30/40 FEATURE: Dry or Wet working Multi-purpose for granite marble natural stone ceramic and even steel grinding #30/40 Coarse high quality Diamond grain ensure aggressive working performance Vacuum Brazed Technology provide faster grinding Speed and longer working life Easy to operate and safer for operater -------------------------------------------END--------------------------------------------- Review: Works great - works great. Good product Review: Tough and versatile wheel! - Love this grinding wheel. Use it for wood and texturizing metal. Tough blade! ## Features - 1 pc 4 inch High Quality Vacuum Brazed Diamond Grinding Disc - Diameter 100mm (4"), Bore 22.23mm (7/8"), with reducer washer to 16mm bore (5/8") ,Diamond grit #30/40 - Vacuum Brazed Technology provide faster grinding Speed and longer working life - Dry or Wet working,Multi-purpose for Iron steel granite marble natural stone ceramic and even steel grinding - Very high quality, grinding iron steel with less spark, faster and safer ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B078XS4Q83 | | Brand | SHDIATOOL | | Brand Name | SHDIATOOL | | Compatible Devices | Angle Grinder | | Compatible Material | Alloy Steel, Ceramic, Iron, Marble, Stone | | Compatible devices | Angle Grinder | | Construction Type | Coated | | Customer Reviews | 4.5 out of 5 stars 83 Reviews | | Grit Material Type | Diamond | | Grit Number | 40 | | Grit Type | Coarse | | Grit material | Diamond | | Grit number | 40 | | Grit type | Coarse | | Industry Standard Identifier | 718760494761 | | Item Diameter | 100 Millimeters | | Item Dimensions | 10.2 x 10.2 x 0.1 centimeters | | Item Dimensions L x W | 10.2L x 10.2W centimeters | | Manufacturer | SHANGHAI DIATOOL CO., LTD. | | Material Type | Artificial diamond and Steel body | | Maximum Rotational Speed | 9072 RPM | | Product dimensions | 10.2L x 10.2W centimeters | | Recommended Uses For Product | Grinding | | UPC | 718760494761 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** SHDIATOOL - **Compatible Devices:** Angle Grinder - **Grit Material:** Diamond - **Grit Type:** Coarse - **Product Dimensions:** 4"L x 4"W ## Images ![SHDIATOOL 4 Inch Diamond Grinding Cup Wheel for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor - Image 1](https://m.media-amazon.com/images/I/81PFAgvO8UL.jpg) ![SHDIATOOL 4 Inch Diamond Grinding Cup Wheel for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor - Image 2](https://m.media-amazon.com/images/I/61G4uZQWB0L.jpg) ![SHDIATOOL 4 Inch Diamond Grinding Cup Wheel for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor - Image 3](https://m.media-amazon.com/images/I/61SrO0vH8CL.jpg) ![SHDIATOOL 4 Inch Diamond Grinding Cup Wheel for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor - Image 4](https://m.media-amazon.com/images/I/71cqlzcRohL.jpg) ![SHDIATOOL 4 Inch Diamond Grinding Cup Wheel for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor - Image 5](https://m.media-amazon.com/images/I/71l84KDNqAL.jpg) ## 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 odors—making your workspace safer. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great *by R***S on 24 July 2026* works great. Good product ### ⭐⭐⭐⭐⭐ Tough and versatile wheel! *by J***D on 18 October 2025* Love this grinding wheel. Use it for wood and texturizing metal. Tough blade! ### ⭐⭐⭐⭐⭐ Excellent product *by R***D on 23 July 2023* I've repired concrete cracks on my driveway. I had to smooth the concrete. This disc is excellent for finishing the repairs. ## Frequently Bought Together - SHDIATOOL 4 - Inch Diamond Grinding Wheel for Granite Marble Iron Steel Masonry Cup Grinding Disc 30/40 Grit, Dry/Wet Use, Fits 7/8 Inch Arbor - BRSCHNITT Diamond Grinding Wheel - Spherical Diamond Trimming Bit for Stone, Flowerpots, Cobblestone, Granite, Marble Rock Planters Milling Carving DIY Handmade Cutter (50mm) - SHDIATOOL 3 Inch Profile Hand Diamond Wheel Height 30mm Convex Curve Edge Grinding for Stone Marble Granite Rock --- ## 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.za/products/354820204-shdiatool-4-inch-diamond-grinding-cup-wheel-for-granite-marble](https://www.desertcart.co.za/products/354820204-shdiatool-4-inch-diamond-grinding-cup-wheel-for-granite-marble) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-10-16*