Astro Pneumatic's 222 ONYX 2pc Die Grinder Kit includes a 1/4-Inch 90-Degree Angle Die Grinder and 1/4-Inch Medium Die Grinder . The set features composite handles which reduce vibration, a rib textured handle for a firm grip as well as a lever throttle for feathering control. These tools are compact and lightweight and feature rear exhaust and built in regulators.