... cellulose, metallic, synthetics length difference is available . AIR spray gun the adjuctable height pressure nozzle installment1.gun cap diameter: 1.4 2. capacity:1L ... accommodate a variety of coatings(2)Precise machined air cap set(3)Air volume, paint outlet & spraying pattern adjustable.(4) Soft, super-fine ... 't lose brightness after cleaning.(6)1 year limited warranty. Air spray gun