Crystalite Dual Crystalheart™ Fantasy Grinding Wheel The Crystalite Dual Crystalheart™️ Fantasy Grinding Wheel is designed to make perfect heart shapes every time. The wheel has a small and large heart configuration with a flat middle surface for O.D. cutting. 6” x 1-1/2”. 3/4″ Arbor Hole For polishing hearts use a Phenolic V wheel, diamond compound and extender fluid. FREE Shipping!