8″ x1-1/2 Diamond Flat Lapidary and glass Grinding Wheel-46Grit Review June 18, 2018August 29, 2018 - LoudMandarin The wheel grinding hard materials ,They are particularly well suited for glass beveling, cold glass working and lapidary, We also have 8″ X 2″ wheels for your Titan machine.2″Width wheel with 2″ steel ring and 1.5″ width plastic core.