Sparx 5/8th Fire Grinding Ring

Used 5/8th Fire Grinding Ring. Slightly more than half life left on this ring. HOW LONG DOES A GRINDING RING LAST? If you’re freshening up your blades after every skate, you’ll get 50-60 sharpenings (or even more!) per ring (Radius Ring or FIRE Ring) and if you’re sharpening your skates after every 5-6 hours of ice time, you’ll get about 40 sharpenings. We like to say its about $1 per sharpening. HOW DOES THE GRINDING RING KNOW WHEN IT'S OUT OF SHARPENINGS? This information is stored on a microchip inside the Grinding Ring and is relayed to the Ring Life Status Bar on the Menu Pad.