Now you can grind a Spherical depression in your workpiece. The radius design produces more
cutting power than conventional flat wheels delivering a double bite. This wheel promotes high visibility of the point of contact
with the stone, allowing you precise control of the cutting outline. The spherical miracle also removes punting marks. 1” arbor
hole is bushed 3/4", 5/8" and 1/2".They are good for lapidary and light glass work.