3M 7000121879 – 3M Standard Abrasives™ Unitized Wheel Steel Screw Mandrel 850034, 7/8 in x 1/4 in, Shank Discount

3M 7000121879 Mandrel is a threaded attachment type with a 0.25 in shank size and 0.87 in (22.09 mm) shank length. Ideal for securely holding abrasive discs during grinding and finishing applications.