Reducing Union 3/8" OD X 5/16" OD - RU-375-312 Outer Diameter: 3/8" Outer Diameter: 5/16" MPN: RU-375-312 Product Code: RU-375-312 This is an online offer only for a Limited Time! Availability: In stock Only £23.61 incl VAT. Delivery available to UK/Europe |