3M Metal Mandrel 990M for Radial Bristle Disc , Yellow
Used to hold single Scotch-Brite Radial Bristle Brushes in 50.8mm and 76.2mm diameter up to a total packing width of 12.7mm
Also for holding the compressed Scotch-Brite Compact Discs XL-UW | CP-UW | CS-UW in 50.8 mm and 76.2 mm diameter with 9.5 mm inner hole suitable