Check the listing for details. Replacement Diamond Cut Disc for Ring Filer. Condition: New. Listed at 30.99 USD. Precision Grinding Performance – Diamond-cut carbide disc delivers fast, accurate material removal when setting piston ring end gaps for professional engine assembly work., Compatible Replacement Disc – Designed as a direct replacement for Speedway ring filer units, ensuring smooth operation and consistent results during ring preparation., Durable Carbide Construction – High-quality carbide grinding surface maintains cutting efficiency and longevity, even when working with hardened or plated materials., Bench-Mounted Convenience – Can be mounted to most workbenches for added stability and control while filing rings, improving accuracy and ease of use., Compact, Useful Dimensions – Features a 2.29-inch outside diameter with a 0.24-inch inside diameter pilot hole, matching standard ring file.