Claber Rainjet 1/2-1/4 T-shaped Coupling, Pack of 2 - B&Q for all your home and garden supplies and advice on all the latest DIY trends
Claber 1/2"-1/4" reducing T-joint is used to branch off 1/4” (4 - 6mm) feeding tube sections from 1/2” (13 - 16mm) main tube