The Pro-Graad EM-146 Extension Mandrel offers a versatile solution for challenging applications where standard shank length quick change disc pad holders and bore polishers are unable to reach. Features a 1/4" shank diameter and a 6" overall length, it's designed to provide extended reach, making it ideal for accessing hard-to-reach areas using quick change holder or bore polisher. Crafted from Hardened Carbon Steel, this extension mandrel ensures durability, strength, and longevity, effectively extending the lifespan of the mandrel. Thanks to its universal compatibility, the Pro-Graad EM-146 Extension Mandrel seamlessly works with Roloc, Roll Lock, TR, TS Holders and Bore Polishers, offering convenience and flexibility in usage. It's easily mountable, compatible with 1/4"-20 female threaded Roloc, Roll Lock, Type R, Type S Quick Change Disc Pad Holders, and Bore Polishers, effortlessly attaching to die grinders or drills with 1/4"-diameter shank. Each package includes one Pro-Graad EM-146 1/4" Shank Diameter x 6" Overall Length, 1/4"-20 Thread Size Extension Mandrel.