Kadee #806 O Scale Short Centerset Plastic Couplers with Plastic Short Gearboxes - Black

Kadee #806 O Scale Short Centerset Plastic Couplers with Plastic Short Gearboxes - Black   This industry leading coupler features Original Style Head Short Centerset Plastic Couplers, and #850 O Scale centering spring and comes complete with Short Plastic Gearboxes and lids. The #743 Metal Coupler may be mounted with the included Short Plastic Gearbox (#806 type). 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.