Oil-, soft replaceable rubber tip. Will not mar delicate surfaces. Gives a leakproof 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. To comply with OSHA regulations this blowgun must be used on a regulated air line with a pressure setting not to exceed 30 P.S.I. WARNING: Handling the brass parts of the product can expose you to Lead a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to - www.P65Warnings.ca.gov Wash hands after handlin - 1,3-Butadiene