Use this mandrel to mount different accessories to your Dremel multi tool The Dremel 2615S402JB (SC402) EZ SpeedClic Mandrel is designed to be used in conjunction with the SC545 diamond cutting disc in order to mount it to your Dremel rotary tool. It features a slotted screw head and a 3.2mm shank and is compatible with all Dremel rotary tools. Features: Mandrel to mount different accessories to use with your Dremel Multi-Tool The 402 mandrel is used primarily with Dremel Cut-off Wheels and Polishing Wheels Features a slotted screw head and a 3.2mm shank Compatible with all Dremel Multi-Tools Use the flathead wrench to loosen or tighten the mandrels screw Use it with the following Dremel accessories: 409, 411, 412, 413, 420, 423, 425, 426, 456, 511, 512, 540 and 541 Specification: Shank diameter: 3.2mm Accessory length: 35mm Maximum RPM: 35.000 1/min