Ultra-Shear Round Tools cut inside curves. For example, the inside of a bowl or a cove in a spindle. By sweeping the tool in an arc you can create any inside curve from a minimum of the size of the insert up to the shallow…nearly flat…shape of a serving platter. There are three sizes available. The Full and Mid-Size use the same inserts and the Pen Size uses smaller inserts. If you’re turning bowls and furniture components, the Full-Size is your best choice. The Mid-Size is a great choice if you turn pizza cutters, duck calls, shaving brushes and other palm-sized projects. The Pen Size tools are the right choice for pens, lace bobbins, finials and other fine, delicate work.