The Swix Diamond Round Pocket Stone (TA3004) is the ultimate tool for polishing steel edges and removing burrs left behind by filing or rock damage. This is a crucial step in tuning, as a polished edge is not only sharper but also more durable. Designed as a handy, pocket size tool (often called a Diamond Disk Tuner), it allows you to fix your edges quickly for better performance right on the hill. Product Type: Tuning Tool (Diamond Stone/Tuner) Model Name: Diamond Round Pocket Stone (TA3004) Target Equipment: Alpine Skis and Snowboards Function: Polishing edges and removing burrs Design: Diamond Disk Tuner, Pocket Size File Guide Side Edge Angles Supported: 88Adeg and 89Adeg (or 87Adeg and 88Adeg) Best Use: Final edge finishing, on-hill touch-ups Key Benefit: Creates a smooth, razor-sharp edge finish