LTWFITTING 1/4 in. x 3/8 in. I.D. Brass Hose Barb Reducer Splicer Fittings (50-Pack) HF3913R060450 - The Home Depot
2pcs Brass Hose Barb Fitting 1/4" Barbed X 1/16 NPT Pipe Male Adapter | eBay
JEGS 555-100844: -6 AN to Straight 5/16 in. Hose Barb Adapter Fitting | -6 AN Female to 5/16 in. I.D. Hose | Aluminum | Blue Anodized Finish | Sold Individually - JEGS
JEGS 555-110850: -8 AN to 90-Degree 3/8 in. Hose Barb Adapter Fitting | -8 AN Female to 3/8 in. I.D. Hose | Aluminum | Black Anodized Finish | Sold Individually - JEGS
LTWFITTING 3/8 in. x 5/8 in. I.D. Brass Hose Barb Reducer Splicer Fittings (25-Pack) HF3913R100625 - The Home Depot
Amazon.com: Boeray 5pcs Brass Hose Barb Fittings 1/4 Inch Barb to 1/4 Inch NPT Male Thread Air Hose Fitting Adapter : Industrial & Scientific
Joywayus Hose Barb Reducer 1/2" to 3/4" Barb Fitting Reducing Splicer, Hex Union Brass Fitting Water/Fuel/Air: Amazon.com: Industrial & Scientific
Brass Hose Barb - 1/4" ID Hose Barb x 1/4" Female NPT
LTWFITTING 1/2 in. x 5/8 in. I.D. Brass Hose Barb Reducer Splicer Fittings (5-Pack) HF3913R100805 - The Home Depot
JEGS 16002: NPT Straight Hose Barb Fitting | 1/8 in. NPT to 5/16 in. I.D. Hose | Brass | Gold Finish | Set of 2 - JEGS
Amazon.com: 2 Pack Brass Hose Fitting, Adapter, 3/8" Barb x 1/4" NPT Male Pipe : Industrial & Scientific
Everbilt 5/8 in. Barb x 3/4 in. MIP Brass Adapter Fitting 800149 - The Home Depot