PSI Woodworking Products CF3J Faceplate 1-Inch by 8TPI 3-Inch Diameter
3-Inch Steel Face Plate, with a 1" x 8 tpi mount. Use this spare faceplate for mounting extra bowl blanks. Perfect for all small bowl turning. Fits any lathe with a  1" x 8 tpi spindle thread.  This 3-Inch diameter faceplate has  4 screw mounting holes, and two machined flats to grip with a wrench - easy on and easy off.