Gravity/Side-Feed DUAL-ACTION AIRBRUSH SB84-Hobby-Craft Universal Precision Gravity and Siphon Feed Airbrush Extremely Versatile Airbrush that can be used as both a Gravity or Siphon Feed! Provides direct vision of the work surface, allowing for close-up, extra fine detail work 1 Gravity Side Feed Cup: 1/3 oz. (9 cc) and 1 Siphon Feed Bottle: 3/4 oz. (22 cc) Full 1 Year Warranty, so you can be assured of Quality and Reliability.