Dremel, the inventor of the Multitool, now brings you SpeedClic - an innovation that makes changing cut-off wheels extremely quick and easy. Through a patented mandrel and wheel design, Dremel has concocted a way that enables you to change your accessory in 3 simple steps - Pull, Click, Twist - without the need for any tools. These SpeedClic metal cutting discs are suitable for metal cutting and compatible with universal rotary tools. They feature outstanding cutting performance, consistent cutting depth, and long cutting life with high-quality concentration and excellent concentricity. The working diameter is 25mm, shank diameter is 3.2mm, and the disc thickness is 0.75mm. This pack contains 5 metal cutting wheels.