Indicator Accessory Ring Fits Dial Indicators with 4-48 Stems. Accessories mounted on a ring suitable for workbench or flat storage. In addition to the ring, 10 piece set includes: Features Include... 3/8" Roller Bearing Point. 1/2" Roller Bearing Point. 3mm x 1/2" long Ruby Ball Tip, Flat Steel Points (soft steel, black oxide plated) in lengths of 1/4", 1/2", 3/4", and 1 1/4". Flat Steel Points (hardened steel, black oxide plated) in lengths of 1/4" and 3/8" diameters. 0.060" Standard Steel Ball Tip.