Milton 5-In-ONE 3/8 in. ID Universal Safety Exhaust Hose Barb Coupler (Box of 50) 1755BK - The Home Depot
1/4" NPT M-Style Coupler and Plug Kit, (12-Piece) — Milton® Industries Inc.
1/4" NPT M-Style Coupler and Plug Kit, (12-Piece) — Milton® Industries Inc.
Amazon.com: Milton Air Hose Swivel Connector - 1/4in. Dia. NPT, Model# S-657 : Tools & Home Improvement
Lot of 5 Vintage Air Hose Coupler Connector Fittings - Milton, Amflo, Etc. | eBay
1/4" NPT M-Style Coupler and Plug Kit, (5-Piece) — Milton® Industries Inc.
Milton 5 In ONE™ Universal Safety Exhaust Quick-Connect Industrial Coupler, 1/4-in Body 3/8-in MNPT BX 5 in the Air Compressor Fittings department at Lowes.com
Milton S-1750 5-in-1 Universal Safety Exhaust Quick-Connect Industrial Coupler, 1/4 in. FNPT - John M. Ellsworth Co. Inc.
Milton Industries S-224 Milton G-Style Coupler and Plug Kits | Summit Racing
Milton S-217 1/4" NPT V Style Coupler and Plug Kit - 6 Piece - Automotive Air Conditioning Hose Fitting Products - Amazon.com