7-Piece Heavy-Duty Air Blow Gun KitImpact and weather resistant nylon body Ergonomic soft rubber grip Variable speed trigger controls the amount of air dispensed Brass threaded air inlet ensures that threads do not shear Silent operation with noise level under 80 dB Vent in the tip prevents pressure from exceeding 30 PSI if tip becomes blocked, making the gun meet OSHA standard 1 13. 1 as a safety blow gun 1 4" (F) 18 NPT air inlet Includes: Heavy duty safety blow gun w 4 1 2" long S.