#ES-15-R-BR-60 – Roughing Wheel for Poly / Plastic / Hi-index, 15mm #ES-15-R-GP – Roughing Wheel for Glass, 15mm Check your wheel specs (diameter, width and center hole) before ordering. The wheels listed below have 155mm diameter and 20mm center hole. Our edging wheels feature long lasting and high performing diamond bond. Superabrasive offers high quality roughing, finishing and polishing wheels for Essilor edgers, including the Kappa, Gamma, Triumph, Spartan, Profile, MX and 900 models.