The Swix T992 Soft Rubber Stone is an indispensable tool for achieving a professional finish on your steel edges. It is a soft rubber grinding stone for tuning steel edges. Its primary use is for removing burrs left by filing and for rounding steel edges at the front/rear area of alpine skis and snowboards. Properly detuning (rounding) the tip and tail edges prevents edge catching in turns, which increases safety and predictability. Product Type: Tuning Tool (Stone) Model Name: T992 Soft rubber stone Material: Soft Rubber Target Equipment: Alpine Skis and Snowboards Best Use: Removing burrs and rounding/detuning steel edges Application Area: Front/rear area of skis and snowboards Key Benefit: Improves safety and predictability by preventing edge catch