1-1/4 in. 3-Way Elbow PVC Fitting (Box of 60) — FORMUFIT Direct
PVC & CPVC Pipe Fittings | Plastic Pipe Fittings
50 PCS PVC Pipe Fitting Clamps Clips, ULIFESTAR U-shaped Water Tube Holder Water Pipes & Tubing Hoses Snap Ring with Square Bottom and Flat Feet Clamp Clips Holder Fit (50mm/2'') - Amazon.com
Source PVC Pipe Fitting End Adjustable Threaded Holes Socket Square Nut wheel caps on m.alibaba.com
Square PVC Water Pipe - FarmTek
Amazon.com: Feelers 1/2" PT Male Square Head Threaded PPR Fitting Fitting End Cap Garden Hose Stopper Prevent Leakage Choke Fitting, Pack of 5, White : Industrial & Scientific
Amazon.com: Prescott Plastics 1 1/2” (38.1 mm) Square Plastic Plug Insert, Black End Cap for Metal Tubing, Fences, Glide Protection for Chairs and Furniture (10 Pack) : Industrial & Scientific