Comparison : Item # 212-39, Inverted Flare Seat to Male Port Thread Conversion With Inverted Seat Adapter
Item # 212-3920, Inverted Flare Seat to Male Port Thread Conversion With Inverted Seat Adapter
Item # 212-3918, Inverted Flare Seat to Male Port Thread Conversion With Inverted Seat Adapter
Item # 212-38, Inverted Flare Seat to Male Port Thread Conversion With Inverted Seat Adapter
Item # 212-49, Inverted Flare Seat to Male Port Thread Conversion With Inverted Seat Adapter