Kadee #451 HO Scale Extended Swing Gearbox & Whisker Metal Couplers - Medium (9/32") Centerset Shank
Body Mount Extended Swing Gearbox and Medium (9/32") Centerset Shank Whisker® Coupler for passenger or long freight cars allowing negotiating tighter radius curves.
It is not recommended to use a metal coupler directly on a metal surface or in a metal draft gearbox to avoid possible electrical crossover and shorting that may cause damage.