The 3M 00051144451197-31196 is a 18" diameter cartridge roll mandrel. It is designed to be used with an abrasive roll and allows the operator to finish hard to access areas of workpieces. 3M 00051144451197-31196 Features: Shank of the mandrel is secured into the collet assembly or drill chuck of a rotary power tool Mandrel enables access to tight spaces with a cartridge roll Comes in various pilot diameters and lengths to fit different cartridge rolls Shank must match the size of the power tool collet or drill chuck Pilot diameter must match size of cartridge roll 3M 00051144451197-31196 Specifications: Series: 45119~ Product Type: Cartridge Roll Mandrel~ Overall Width: 1in~ Overall Length: 69.85mm~ Overall Diameter: 18in~ For Use With: Securing Cartridge Rolls to Tool, Specialty Abrasive~ Shank Size: 14in~ Maximum Speed: 24000rpm~ Applications: Marine, Metalworking, Transportation & Heavy Equipment, Primary Metal, General Industrial, Paint Preparation, MRO, Aerospace, AOEM, Woodworking, Cutting Tool Manufacturing, Composite~ Package Quantity: 25CA