Interstate Pneumatics B309XS3 Safety Blow Gun with 3 Inch Extension Tip: OSHA Compliant Safety Brass tip 3 inch Long 1/8 inch MPT (BXS03) Maximum Operating Pressure: 175 PSI Flow Rate: 20 CFM at 100 PSI Inlet Pressure Inlet Connection Type: 1/4 inch FPT Outlet Connection Type:1/8 inch NPTS