Shank must match the size of the power tool collet or drill chuck THE MANDREL ATTACHES TO A ROTARY TOOL SUCH AS A DIE GRINDER OR DRILL, AND COMES IN DIFFERENT SIZES TO FIT A VARIETY OF CARTRIDGE ROLL SIZES. Category... 3M Cartridge Roll Mandrel is a tool attachment that holds an abrasive cartridge roll (sold separately). 3M™ Cartridge Roll Mandrel, 3.18 mm x 25.4 mm x 6 mm, PN88749 | 3M Ireland 3M Abrasive Mandrel 3M Cartridge Roll Mandrel, 45118, 3/16 In X 1-1/2 In X 1/4 In, 25, Ea/Case 3m Sandpaper Mandrel enables access to tight spaces with a cartridge roll 3M Cubitron Cartridge Roll Mandrel - Attaches Abrasive India | Ubuy The mandrel attaches to a rotary tool such as a die grinder or drill, and comes in different sizes to fit a variety of cartridge roll sizes. Together, the mandrel and cartridge roll enable the user to grind or finish hard-to-reach areas of a workpiece, such as angles and curves.