FORMUFIT 1/2" 3-Way PVC Elbow Furniture Grade Fitting in Black, 0.84" Actual ID, (Pack of 10), Made In USA, UV-Resistant, Impact-Proof, Easily Build 3-Point Corners with PVC Pipe - F0123WE-BK-10: Amazon.com: Industrial
Alpine Corporation 1-1/2 in. I.D. x 100 ft. Multi-Use Pond Black Kink Free, Corrugated, Non-Kink Flexible PVC Tubing KFH112 - The Home Depot
Black Schedule 40, Tee, Slip x Slip x Slip – Savko Plastic Pipe & Fittings