Swix Gray Soft Rubber Edge Tuning Stone

HOW TO USE - Simply rub the Gummi Stone along the entire length of your ski or board's edge for a smooth finish SWIX GUMMY STONES - remove rust and burrs from your ski edges – Dimensions - 2.3 in x 0.79 in x 0.79 in (59 x 20 x 20 mm) GREY STONE - is soft and works well for detuning tips and tails RED STONE - is for polishing and light to medium edge clean up; can be used after filing to remove micro burrs BLUE STONE - is extra hard for heavily burred edges