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The 3M cartridge roll mandrel is an essential tool attachment designed for professionals who need to finish hard-to-reach areas on their workpiece with ease. Perfectly suitable for angles and curves, the mandrel attaches to a rotary power tool like die grinders or drills and comes in various sizes compatible with different cartridge rolls (sold separately). With its threaded shank design, it secures easily into any collet assembly or drill chuck, providing seamless access to tight spaces. Featuring a 1/4 inch shank diameter and 3/16 inch pilot diameter, this versatile mandrel can accommodate various applications in automotive, aerospace, metalworking, woodworking industries, and more. Improve your efficiency and precision with the trusted quality of 3M's Threaded Mandrel PK25 today!