Gravity Feed Portable Pneumatic Sand Blaster Gun with Spare Blaster Tip Top-mounted gravity fed hopper is perfect for spot rust removal. Fully adjustable media flow valve gives you precise control. Heavy duty aluminum gun body (Zinc Plated), Steel nozzle included Hopper holds 22 oz. of blast media, Lightweight design for extended use Typical operating pressure is 90lbs - Recommended air consumption is 7 CFM