
0.5" Coupler
FS-50-UReplacement 0.5" Coupler
Replacement Coupler for the FS-50. Sold each, not in pairs.
0.5" BSPP > 0.5" PCV Slip Coupler 
 
Replacement Coupler for the FS-50. Sold each, not in pairs.
0.5" BSPP > 0.5" PCV Slip Coupler