16mm Id Elbow Straight Bushing Tee 3 Way Pvc Tube Joint Pipe Fitting Coupler Adapter Water Connector For Garden Irrigation - Pipe Fittings - AliExpress
uxcell PVC Clear Vinyl Tubing, 16mm(5/8") x 19mm(3/4") Plastic Tube Flexible Water Pipe 3.3ft - - Amazon.com
PVC hose barb with external thread | PVC pipes, couplings, faucets & glue | Piping & construction
MECCANIXITY PVC Pipe Fitting 16mm Barbed x 25mm OD Spigot Straight Tube Adapter Hose Quick Connector, Black Pack of 2 - - Amazon.com
Tubing Roll, PVC Black, Dia: 13mm x 16mm (1/2in x 5/8in) - [Length 100m / 328ft]