#451 HO Scale Extended Swing Gearbox & Whisker Metal Couplers - Medium (9/32") Centerset Shank

#451 HO Scale Extended Swing Gearbox & Whisker® Metal Couplers - For Passenger or Long Freight Cars - 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.  One pair per package HO-Scale