Black Tubing -- 1/2 inch Inside -- By The Foot direct from Growers House
Amazon.com: FULAIERGD 1/2 inch Tubing (1/2" ID x0.6-0.63" OD) 16mm to 1/4 inch Irrigation Tube Anti-Drop Barbed Hose Fittings (Fits 13mm ID / 4mm ID) (1/2 to 1/4 inch Four-way) : Industrial
Tube Fittings Category | Hose Barb, Compression and Quick Disconnect Tube Fittings | U.S. Plastic Corp.
Everbilt 1 in. O.D. x 3/4 in. I.D. x 10 ft. PVC Braided Vinyl Tube HKP002-PVC004 - The Home Depot
Barbed Adapter Fittings for Water Pump / Vinyl Tubing - Penguin Chillers
EZ-FLO 1/2-in ID x 10-ft PVC Clear Vinyl Tubing in the Tubing & Hoses department at Lowes.com
The Vinyl Tubing Y Fitting have barbed ends for securely connecting to standard vinyl and soft PVC tubing.
PVC Clear Vinyl Tubing 1/2" ID --BY THE FOOT-Plastic Flexible Hose Tube | eBay
HYDROMAXX 1/4 in. I.D. x 3/8 in. O.D. x 50 ft. Crystal Clear Flexible Non-Toxic, BPA Free Vinyl Tubing 1403014050 - The Home Depot
Best Vinyl Tubing for Your Project - The Home Depot
Plastic Fittings for Tubing and Hose (1/16 ID - 1 ID) | Omega
Abbott Rubber 1/2 In. x 3/8 In. x 10 Ft. T10 Clear PVC Tubing, Cut Lengths - Walmart.com
Beer Line Tailpiece Fitting - 3/8" ID Vinyl Tubing | BeverageFactory.com
Amazon.com: FULAIERGD 1/2 inch Tubing (1/2" ID x0.6-0.63" OD) 16mm to 1/4 inch Irrigation Tube Anti-Drop Barbed Hose Fittings (Fits 13mm ID / 4mm ID) (1/2 TO 1/4 inch Fittings Kit) :
Fisherbrand Vinyl Tubing and Connector Kits I.D. x O.D.: 0.312 x 0.437 | Fisher Scientific