The Astro Pneumatic Tool 205QL ONYX Quick-Lock 1/4" 90° Angle Die Grinder includes a unique quick-lock design that locks the spindle in place with a push of a button. This tool requires only 1 wrench instead of 2 during attachment changes. The composite handle eliminates vibration, cold temperatures, and provides a firm grip. This compact and lightweight unit is built for maximum noise suppression (only 78dB). It includes a lever throttle for feathering control, rear exhaust, and built-in regulator. Specifications: