Utilize to tightly secure Scotch-Brite™ Stars with 1/4-20 internal threads for a safe performance.
With the 3M™ Star Mandrel, you can use your die grinder with the uniquely shaped Scotch-Brite™ Stars to clean, polish, and lightly deburr the inside diameters of pipe and tubing. The 3M™ Star Mandrel is 3 in (7.62 cm) in length with a shank size of 1/4 in (0.64 cm). Thread size is 1/4-20 EXT. It will run safely at a maximum RPM of 24,100.