Comparison : Item # 1510-B-SS, Type B Reduced Cam & Groove Couplings (Female Coupler x Male NPT)
Item # 1510-B-AL, Type B Reduced Cam & Groove Couplings (Female Coupler x Male NPT)
Item # 2015-B-SS, Type B Reduced Cam & Groove Couplings (Female Coupler x Male NPT)
Item # 2015-B-AL, Type B Reduced Cam & Groove Couplings (Female Coupler x Male NPT)
Item # 2030-B-AL, Type B Reduced Cam & Groove Couplings (Female Coupler x Male NPT)