Valve Seat Grinding Stones Set of 36 Pcs for Sioux Holder 11/16" Thread – Heavy Duty 80 Grit Medium Aluminum Oxide Pink Stones – Multiple Sizes from 1" to 2.1/2" – Dressable Stones with Thread Intact

Upgrade your valve reconditioning toolkit with this 36-piece Valve Seat Grinding Stone Set designed specifically for Sioux holders with 11/16" thread size. Each stone is made from premium 80-grit medium aluminum oxide (pink bond) for long life, precise cutting, and excellent surface finish. The set includes 12 popular diameters (from 1" to 2-1/2"), with 3 pieces of each size, providing versatility for a wide range of automotive and engine repair applications. All stones can be dressed to any desired angle while keeping the thread intact — making them ideal for both standard and custom valve seat profiles. Built with heavy-duty construction, these stones are durable and reliable, ensuring consistent results for professionals and enthusiasts alike.

• Comprehensive 36-Piece Set: Includes 12 sizes – 2-1/2", 2-3/8", 2-1/4", 2", 1-7/8", 1-3/4", 1-5/8", 1-1/2", 1-3/8", 1-1/4", 1-1/8", and 1" (3 pcs each).
• Compatible with Sioux Holders: Designed for use with 11/16" thread Sioux valve seat grinding holders.
• High-Quality Pink Aluminum Oxide: 80-grit medium bond stones deliver precise cutting and smooth valve seat finishes.
• Dressable to Any Angle: Stones can be easily dressed to various seat angles while keeping the thread intact.
• Heavy-Duty Construction: Engineered for long service life, accuracy, and dependable performance in workshop conditions.
• Ideal for Professionals: Perfect for engine rebuilders, automotive machine shops, and valve reconditioning specialists.