Designed to be the most advanced, thumb-switch style safety air gun on the market today, the PalmJet™ from Guardair features a comfortable, ergonomic handle and a rugged, stainless steel, ¼" diameter extension -- ideal for cleaning the tightest cavities. Choose from 8 popular bent and straight extension configurations. Precision volume control sets the airflow -- from a whisper to a blast. Star-tip nozzle provides OSHA compliance and superior, debris-cleaning performance. ¼" FNPT inlet.