Inline Vacuum Breaker, Non CEC Compliant, Connection Size 1/2 in, Female NPSM, Male NPSM, Finish Chrome, For Use With Handheld Showerheads, Brass, Encore, Shower Connection Type 1/2 in Female NPSM, 1/2 in Male NPSM, 1 5/8 in.
eBay