Amazon.com: KOOTANS 1/2 NPT Male x 1/4 NPT Male Solid Brass Nipples, Heavy Brass Pipe Adapter Fittings Hex Reducing Nipples Connectors 4Pieces : Industrial & Scientific
Convertisseur de cliquet à douille en acier CR-V, réducteur d'adaptateur de 1/2 "à 1/4" 1/2 "à 1/4" pour voiture, outils de réparation de Garage de vélo, petits outils à douille - AliExpress
PVC female threaded connection 1 "1 / 4- 50 mm
Adapter 1/2 NPT male to G1/4 male
1/4" x 1/2" Male Reducing Connector | Air Pneumatic Fittings & Adapters
Reducer socket - Biltema.dk
4Pcs 1/2 1/4 3/8 Ratchet Wrench Socket Adapter Spanner Keys Set Converter Drive Reducer Electrophoresis Process Tools Black - AliExpress
Milwaukee SHOCKWAVE 1/2 in. Square x 1/4 in. Hex Impact Adaptor 48-03-4410 - The Home Depot