Double action Trigger,Gravity feed with detachable top colour cup.Nozzle - Brass I.D. 0.5MMCup - 30 Ml Stainless SteelUser - Commercial Artists, Architects, Modelers Thermocole, Decorative & Fabric Painters. Best for finishing small & medium articles.Medium - Water,Food,Fabric Colours,Inks, Duco & Oil Paints.