48 Pcs Premium Quality 11/16" Thread Sioux Valve Seat Grinding Stones Set | Pink Panther Aluminium Oxide Vitrified Bonded Emery | For Sioux Style Holder | Bluefox Tools

The 48 PCS Valve Seat Grinder Stone Kit by Bluefox Tools is a professional-grade solution crafted for precision valve seat reconditioning across a wide range of engine types. Specially engineered to fit Sioux-style holders with a standard 11/16" thread, this comprehensive kit is ideal for use in automotive, motorcycle, marine, and heavy-duty diesel engine repair. It is designed to deliver reliable, accurate performance for mechanics, engine builders, and machine shops that demand consistency and efficiency in every job. Each of the 48 stones in this set is manufactured from premium-grade abrasive materials such as aluminum oxide and silicon carbide, ensuring effective cutting action, long life, and excellent heat resistance. These stones are perfectly balanced and shaped to provide a clean, concentric finish on valve seats, restoring optimal sealing performance and extending engine lifespan. The assortment includes a wide range of diameters and profiles, allowing users to cover virtually all seat sizes found in both modern and vintage engines. The kit includes stones with multiple seat angles and sizes , STONE SIZES :- 2.1/2" - 4 PCS, 2.3/8" - 4 PCS , 2.1/4" - 4PCS, 2" - 4 PCS , 1.7/8" - 4 PCS, ,1.3/4" - 4 PCS, 1.5/8" - 4 PCS, 1.1/2" - 4 PCS, 1.3/8" - 4 PCS, 1.1/4" - 4 PCS, 1.1/8" - 4 PCS , 1" - 4 PCS °, making it versatile enough to meet OEM specifications or custom tuning needs. Whether you are performing regular maintenance, complete overhauls, or precision valve seat matching, this kit ensures smooth operation and professional-level results. The robust 11/16" threaded hubs provide secure attachment and compatibility with Sioux-style grinding tools, ensuring ease of use and stability during high-speed operations. Every component in this kit is manufactured with durability and performance in mind, offering a long service life even under frequent or heavy-duty use. Bluefox Tools has designed this valve seat stone kit for serious professionals who require high standards of quality and versatility. From garages and restoration shops to industrial maintenance facilities, this kit stands out as a reliable and indispensable part of any engine rebuilding setup.

• 🔧 Complete 48-Piece Kit for Valve Seat Reconditioning A comprehensive set of 48 grinding stones in assorted diameters and seat angles, offering full coverage for intake and exhaust valve seat jobs across a wide range of engine types.
• 🔩 11/16" Thread for Sioux-Style Compatibility Designed with a standard 11/16" threaded hub to fit Sioux valve seat grinder holders and pilots securely, ensuring stability and safe, vibration-free operation. VITRIFIED BOND 80 GRIT MEDIUM. ALUMINIUM OXIDE PINK STONES 25MM (1") TO 38MM (1.1/2")
• 📐 Multiple Seat Angles Included Stones available in common and critical angles to match factory specifications or allow for custom seat profiling during valve seat restoration. STONE SIZES :- 2.1/2" - 4 PCS, 2.3/8" - 4 PCS , 2.1/4" - 4PCS, 2" - 4 PCS , 1.7/8" - 4 PCS, ,1.3/4" - 4 PCS, 1.5/8" - 4 PCS, 1.1/2" - 4 PCS, 1.3/8" - 4 PCS, 1.1/4" - 4 PCS, 1.1/8" - 4 PCS , 1" - 4 PCS
• 🧰 Versatile Applications Across Engine Types Suitable for reconditioning valve seats on automotive engines, motorcycles, marine motors, and heavy-duty diesel cylinder heads—ideal for professionals and rebuilders.
• ✅ Quality & Reliability from Bluefox Tools Trusted brand delivering precision-engineered tools designed for durability, performance, and long-term reliability in valve seat grinding operations.