Everbilt 1-1/4 in. Barb Nylon Splicer Fitting 800259 - The Home Depot
STRAIGHT HOSE BARB BARBED NIPPLE 1/2 Male NPT to 20mm (~7/8) Barb to fit ~3/4" ID Tubing for Brew Kettle Ball Valve 304 Stainless - Hobby Homebrew
Amazon.com : Joywayus 5/8" Barb x 3/4" Female GHT Thread Swivel Round Brass Garden Water Hose Pipe Connector Copper Fitting with Stainless Clamp House/Boat/Lawn/Power Wash/Irrigation : Patio, Lawn & Garden
Amazon.com: uxcell PVC Barb Hose Fitting Connector Adapter 16mm or 5/8" Barbed x G3/4 Male Pipe 6pcs : Industrial & Scientific
Barb tubing coupling
Amazon.com: Horiznext NPT 1" male thread to 1 inch O.D. barb stainless steel pipe fitting, for connecting 1 inch I.D. air hose tubing, pack of 2 pcs : Industrial & Scientific