The shank of the mandrel must match the size of the power tool collet or drill chuck, and the pilot diameter must be compatible with the size of the cartridge roll.
3M 45120, Cartridge RoII Mandrel, 3/32 in x 3/4 in x 1/4 in, 7010328349
$4.51
Factory Stock, 7-10 Day Leadtime
3M Cartridge Roll Mandrel is a tool attachment that holds an abrasive cartridge roll (sold separately). 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. 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.

Standard Abrasives 873198, Quick Change TR A/O Unitized Wheel, 731, 3 in x 1/4 in, 7000046998
Dynabrade 92761 3" W x 50' L 40 Micron Diamond Microfinishing Film DynaCut Roll
Dynabrade 92754 3" W x 150' L 15 Micron A/O Microfinishing Film DynaCut Roll
Standard Abrasives 873178, A/O HD Unitized Wheel, 731, 6 in x 1 in x 1 in, 7000047060
3M 14895, Cloth Belt 777F, 80 YF-weight, 1 in x 42 in, Film-lok, Single-flex, 7010299926, 200 per case 
