NDL Copper Reducing Coupling C x C Breadcrumb Home / Products / Parts / Fittings / Copper Fittings / Copper Couplings / Copper Reducing Couplings C x C Loading... Customer Part Number: 400R-5838 Brand: NDL Connection Size (In.): 5/8 x 3/8 Fitting Type: Reducing Coupling Industry Number: W 01025 Material: Copper Net Weight (Lb.): 0.033 Quantity per Package: 50 Size (In.): 5/8 x 3/8