DN15 X 10 (1/2" X 3/8" NB) NPT REDUCING BUSH SS 316

Side 1 threaded: 1/2" NPT Male
Side 1 suits an outside diameter (OD) of: 21.3mm
Side 2 threaded: 3/8" NPT Female
Side 2 suits suits an outside diameter (OD) of: 17.15mm

Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97

Alternative terminology:
Forged Stainless Steel,Stainless Steel, Reducing Bush, Threaded, Screwed, , Fittings.