MistKing 3/8 Pump Fitting 2 Pack is a replacement fitting for use with Advanced pumps. Advanced pumps going over 20 nozzles must have 3/8” fittings like this one on both of the ports. 3/8” NPT male on one end and 3/8” push to connect fitting on the other end. Made of nickel plated brass, this fitting is highly durable. Push to connect for easy tube removal. To be used only with MistKing misting systems.