The Carbide bits are guaranteed to last 20 times longer than High Speed Steel and will help you produce an incredibly smooth finish that barely needs any sanding. The flat surface on the tool handle blade lets you easily slide over the toolrest for straight and level cuts. If you'd rather use the chisel at an angle, simply rotate the bit in the holder so the base of the blade is round. Features a long handle for turning comfort. Overall length is 18 in., blade is 6 in. Use the 2 in. Radius bit to rough rough and remove wood and round spindle. The radius bit is capable of forming large curves on handles ideal for pen barrels.Use the 3/8 in. Square bit to rough a straight work piece to round. The square bit leaves workpiece perfectly straight. Use the 3/8 in. round bit to turn a profile on a work piece. The 3/8 in. round bit works well to shape handles with curves and to hollow bowls or cut coves and other rounded shapes.Use the Detail Diamond bit to carve coves and beads for intricate decorative spindle work. Also use the detail diamond bit to cut tenons and as a parting tool.