Connectors are galvanized with copper, black plastic and high strength shrapnel.

Installation and use
Installation: Installation of threaded joints, be sure to use a wrench in the hexagonal copper parts, rotating fastening.
Trachea: Tracheal outer diameter tolerance within ± 0.1mm.
Connection: end of the trachea cut using special cutting knife thrust into place.
Unloading: Pull out the trachea after pressing out the ring. Air source: Compressed air
 
  Note:
1: Please contact customer service before the shot is in stock, so as not to delay your accurate receipt time.
 
2: return of non-quality problems borne by the buyer freight, quality problems, the seller bear the freight.