Upgrade your old single hole index plate to the dual row index plate for thicker wall rings. Longer design fits all Ring Masters including the new Series 8 Ring Masters.
These new index plates feature a symbol to help identify each row of holes. Two index plates with two rows each 5/16, 11/32, 3/8 and 1/2 inch hole spacing, which lets you choose the best angle and wall thickness for your project. Comes complete with index pin, screw and chart. Works with all Ring Masters.