Zirconium belts for Pro Edge Machine

Naylors Abrasives Zirconium belt to fit Robert Sorby ProEdge sharpening system, Belts made with 75% Zirconium, an abrasive which is extremely hardwearing and instead of wearing the crystals break down to reveal fresh abrasive edges. These belts are on a polyester backing which is proving a bit too strong for the very small wheels on the pro-edge machine and the wear rate is higher than with the cloth backed. Could be worth trying at this price though.