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 45119, Cartridge Roll Mandrel, 1/8 in x 1 in x 1/4 in, 7000045771
$3.36
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.

Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
3M 02405, Utility Cloth Sheet 211K, 9 in x 11 in 220 J-weight, 7010299775
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
Standard Abrasives 37446, PSA A/O Disc, 700595, 1-1/2 in x NH, 60, 7010331822
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
3M 19764, Utility Cloth Sheet 314D, 9 in x 11 in P320 J-weight, 7000000352
Dynabrade 95544 Gear Grease, 2.5oz. Tube
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
Dynabrade 92031 3" Dia. x 60 Grit Ceramic Non-Vacuum DynaCut Locking-Type Disc, 25/pack
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Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
3M 19795, Utility Cloth Roll 314D, P400 J-weight, 1-1/2 in x 20 yd, 7100081717
Standard Abrasives 713297, Aluminum Oxide Handy Roll, P120 J-weight, 2 in x 50 yd, 7100031623
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
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Dynabrade 11477 Dynabelter Abrasive Belt Tool, Heavy-Duty
Dynabrade 14360 Pneumatic Pipe Belt Finisher
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
3M 19773, Utility Cloth Sheet 314D, 9 in x 11 in P60 X-weight, 7000000360
3M 05027, Utility Cloth Roll 211K, 150 J-weight, 1-1/2 in x 50 yd, Full-flex, 7100031693
Dynabrade 14000 Dynafile Abrasive Belt Tool
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
3M 72600, 663FC 1/2" X 30", 70u Diamond Trizact Belt, 7100206529
Standard Abrasives 713159, Aluminum Oxide Handy Roll, P120 J-weight, 1-1/2 in x 50 yd, 7010290409
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
Dynabrade 78702 D10-6 Cartridge Roll Mandrel 1/8" Pilot Dia. x 1-1/2" Pilot Length, 1/4" Dia. Shank x 3-3/4" Shank Length 
