Oil resistant soft replaceable rubber tip. Will not mar delicate surfaces. Gives a leak-proof seal against oil passages fuel lines etc. when air pressure is needed for cleaning. 1/4″ female NPT inlet allows full line pressure to be used. Carded. 5/master. IMPORTANT: To comply with OSHA regulations Standard Blowguns must be used on a regulated air line with a pressure setting not to exceed 30 PSI.