--- product_id: 747148518 title: "Flex-Hone 240 Grit 3-1/2\"/89mm Bore Size 0.310\" Shank Size 13.5\" OAL Block Cylinder Silicon Carbide Flex Hone" brand: "flex-hone" price: "€ 33.03" currency: EUR in_stock: false url: https://www.desertcart.es/products/747148518-flex-hone-240-grit-3-1-2-89mm-bore-size store_origin: ES region: Spain --- # Flex-Hone 240 Grit 3-1/2"/89mm Bore Size 0.310" Shank Size 13.5" OAL Block Cylinder Silicon Carbide Flex Hone **Brand:** flex-hone **Price:** € 33.03 **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** Flex-Hone 240 Grit 3-1/2"/89mm Bore Size 0.310" Shank Size 13.5" OAL Block Cylinder Silicon Carbide Flex Hone by flex-hone - **How much does it cost?** € 33.03 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/747148518-flex-hone-240-grit-3-1-2-89mm-bore-size) ## Best For - flex-hone enthusiasts ## Why This Product - Trusted flex-hone brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description ## Technical Specifications | Specification | Value | |---------------|-------| | Part number | GB31224 | | Item Weight | 308 g | | Product Dimensions | 34.29 x 12.95 x 12.95 cm; 308.44 g | | Color | XX6 | | Material | Silicon Carbide | | Number Of Pieces | 1 | | Grit Rating | 240 | | Batteries Included | No | | Batteries Required? | No | | Item Dimensions LxWxH | 34.3 x 13 x 13 cm | ## Product Details - **Material:** Silicon Carbide - **Brand:** Flex-Hone - **Grit Material:** Silicon Carbide - **Color:** XX6 - **Number of Pieces:** 1 ## Images ![Flex-Hone 240 Grit 3-1/2"/89mm Bore Size 0.310" Shank Size 13.5" OAL Block Cylinder Silicon Carbide Flex Hone - Image 1](https://m.media-amazon.com/images/I/61f9Ueb7-8L.jpg) ![Flex-Hone 240 Grit 3-1/2"/89mm Bore Size 0.310" Shank Size 13.5" OAL Block Cylinder Silicon Carbide Flex Hone - Image 2](https://m.media-amazon.com/images/I/71Xmnk2pt6L.jpg) ![Flex-Hone 240 Grit 3-1/2"/89mm Bore Size 0.310" Shank Size 13.5" OAL Block Cylinder Silicon Carbide Flex Hone - Image 3](https://m.media-amazon.com/images/I/71LI+vNqxIL.jpg) ![Flex-Hone 240 Grit 3-1/2"/89mm Bore Size 0.310" Shank Size 13.5" OAL Block Cylinder Silicon Carbide Flex Hone - Image 4](https://m.media-amazon.com/images/I/81aPGQTXemL.jpg) ![Flex-Hone 240 Grit 3-1/2"/89mm Bore Size 0.310" Shank Size 13.5" OAL Block Cylinder Silicon Carbide Flex Hone - Image 5](https://m.media-amazon.com/images/I/81X4pgWlJtL.jpg) ## Questions & Answers **Q: Wish one is best for a cylinder wall that is 75mm (2.95 inch) ?** A: For the cylinder wall bore size of 2.95", the 3" Flex-Hone is the correct choice., Enter this ASIN # B002N3AA2A in the Amazon search bar for the correct hone. **Q: Hello, my cylinder bore is 3 1/8" what size tool do i need to purchase thank you.** A: For a 3.125" bore, your application will require the 3-1/4" (3.250") diameter Flex-hone. The 3-1/4" will work perfectly in the 3-1/8" bore as the 3-1/4" Flex-hones working range is down to 3.000". Thank you for the inquiry. **Q: Can i use this to hone out an old cast iron pipe? it's about 3 3/4" now and i want it at 4" id. thanks** A: This hone is not coarse enough to remove that much material. It would take forever and the hone would wear out first. You would need a lathe to remove that amount of thickness. **Q: I see that it says tool is oversized. For a cylinder bore of 3.66, should I be getting the 3.75 or the 3.50 model?** A: 1I bought a 4.50 and used it on a 3.55 bore with no problem I didn't hone as much as instruction said for large bore, hatch marks were beautiful so go bigger and you can use it over a broad area of bores. ## Frequently Bought Together - Brush Research GB31224 FLEX-HONE®, 3-1/2" (89mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials - Brush Research FHQ FLEX-HONE® Oil, Specially Formulated Honing Oil, 1 Quart Bottle (32 fl oz) - Permatex 81950 Ultra Slick Engine Assembly Lube, 4 oz. , Red --- ## 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.es/products/747148518-flex-hone-240-grit-3-1-2-89mm-bore-size](https://www.desertcart.es/products/747148518-flex-hone-240-grit-3-1-2-89mm-bore-size) --- *Product available on Desertcart Spain* *Store origin: ES* *Last updated: 2026-05-24*