Milton 2-In-ONE 1/4 in. FNPT Universal Safety Exhaust Coupler (Box of 5) 1756 - The Home Depot
Milton M Style Button Safety Coupler S-99706, Push Button to Stop Airflow and Release Plug, Prevent Accidental Disconnects, 1/4" Male NPT - Air Tool Fittings - Amazon.com
Milton Air Hose Reel & 5-In-1 Universal Safety Exhaust Coupler
Chicago Coupling — Locking Air Hose Couplings
Husky 1/4 in. Female Safety Coupler HDA22800 - The Home Depot
Milton 5-In-ONE 3/8 in. ID Universal Safety Exhaust Hose Barb Coupler (Box of 50) 1755BK - The Home Depot
Tomco U2-16 Universal Anti Blow Back Safety Coupler U216 Air Hose Fittings | eBay
Prevost Corporation ISC061201 Industrial Safety Coupler 1/4" x 1/4" Female - Air Tool Fittings - Amazon.com
Blue Push Button 1/4 Female Air Coupler Industrial | Safety & Push Button | Air Couplers | Air Hose & Accessories | Shop Supplies and Safety | Wurth USA
Milton S-1750 5-in-1 Universal Safety Exhaust Quick-Connect Industrial Coupler, 1/4 in. FNPT - John M. Ellsworth Co. Inc.
Milton 5 In One Universal Safety Exhaust Hose Barb Industrial Coupler and #8211; 3/8-in Id x 1/4-in Flow Body- Box Of 5 in the Air Compressor Fittings department at Lowes.com
Milton (S-219) 1/4" FNPT M-Style Safety Coupler and Plug Kit - 5 Piece - Air Tool Fittings - Amazon.com