56043 Knuckle Coupler (HO-Scale) $9.29 Default Title - $9.29 Quantity Please fill in the form below if you'd like to be notified when it becomes available. 56043 Standard Knuckle Coupler, 2 pieces (HO-Scale) Standard knuckle coupler for NEM coupler shaft. NEM couplers easily snap/push into place.
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