Kadee is now shipping a smaller head coupler which is more to scale and is patterned after the type 'E'' couplers. The coupler will couple and uncouple with other Kadee HO and HOn3 couplers. The coupler has the same shank and offset as the #5 coupler which will allow the modeler to remove the existing #5 coupler and replace with the new smaller coupler. The new coupler is made of the same metal construction as the #5 for strength and rigidity. The #58 package contains two pair of the new coupler, two pair of the #5 centering springs, two pair of the #5 gearboxes, and instructions. Please note that the knuckle spring required for this coupler is the new #625, not the #622 which is used on other couplers.