Description Safety Button Blo-Gun with 1/4" NPT - 150 PSI Inlet - 30 PSI Maximum Nozzle - Meets OSHA requirements - For cleaning fuel & oil lines, air cleaners, etc.; drying out wet ignition systems & spark plugs; blowing out dust, filings, & hundreds of other uses. This item is a suitable alternative for the following: 574-S107, S107