| Comparison : | Item # 1510-D-AL, Type D Reduced Cam & Groove Couplings (Female Coupler x Female NPT) Item # 1510-D-SS, Type D Reduced Cam & Groove Couplings (Female Coupler x Female NPT)
 Item # 2015-D-AL, Type D Reduced Cam & Groove Couplings (Female Coupler x Female NPT)
 Item # 2015-D-SS, Type D Reduced Cam & Groove Couplings (Female Coupler x Female NPT)
 Item # 3020-D-AL, Type D Reduced Cam & Groove Couplings (Female Coupler x Female NPT)
 
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