Gravity fed, safety vented reservoir tank eliminates tubes or siphon hoses that can easily clog. Runs continuously and virtually clog-free with the correct media and moisture free air. Lightweight, long-lasting comfortable design employs gravity to help force the blast media into a hardened steel mixing chamber. Compressed air then forces the particles through a top grade alumina ceramic nozzle at extraordinary velocity Specs: . Operating Pressure 60-125 PSI. Working Pressure 100-125 PSI. Air Consumption 12 CFM-125 PSI. Min. Air Compressor 3 H.P. Fitting Size 1/4 NPT. Container Capacity 26 OZ. Gun Material ABS. Empty Weight 14 OZ. Max. Particle Size 14 Grit.