Comparison : Item # B3115F-G200150, Plain Bevel Seat x Threaded Bevel Seat Concentric Reducers
Item # B3115F-G250200, Plain Bevel Seat x Threaded Bevel Seat Concentric Reducers
Item # B3115F-G300200, Plain Bevel Seat x Threaded Bevel Seat Concentric Reducers
Item # B3115F-G300250, Plain Bevel Seat x Threaded Bevel Seat Concentric Reducers
Item # B3115F-G400300, Plain Bevel Seat x Threaded Bevel Seat Concentric Reducers