DN15 X 8 (1/2" X 1/4" NB) NPT 3000# FS GALVANISED HEX REDUCING BUSH A105N

Thread Side 1: 1/2" NPT Male
Suits an outside diameter (OD) of: 21.3mm
Thread Side 2: 1/4" NPT Female
Suits an outside diameter (OD) of: 13.72mm
Material: Forged Steel
Grade: A105N
Construction: Forged
Finish: Galvanised
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Reducing Bush, MXF, Hex Bush, Carbon Steel