Side 1 threaded: 1/4" BSPT Female
Suits 1 suits an outside diameter (OD) of: 13.72mm
Side 2 threaded: 1/8" BSPT Female
Side 2 suits suits an outside diameter (OD) of: 10.29mm

Material: Forged Steel A105N
Finish: Black Self Colour

Standards:
Nominal Bore, Threaded, Screwed, 3000 psi (3K) High Pressure, Forged Steel A105N, BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97




Alternative terminology:
Reducer, Socket, Reducing Socket, Carbon Steel