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For a #37 equivalent use the #147 in a #252 Gearbox. The next evolution of model train couplers starts and ends with the Kadee® Whisker® series of couplers. We took everything you loved about the No.5® and improved upon it.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.