Check the listing for details. Herkat Universal Underfloor Uncoupler, HO (1:87), New. Condition: New. Listed at 15.00 USD. Herkat Universal Underfloor Uncoupler, HO (1:87) Brand new in original, sealded packaging. I don't know a lot about this item, it was part of my dad's arsenal of layout accessories. It is an European brand and more easily found on German eBay, but also on websites where you can check how it works.My quick research showed it to be a HO decoupler that goes under the layout to be used on prototypical train shunting and station operations. Item from personal, private collection. It belonged to my dad who had a vast collection of rolling stock, building kits, vehicles and accessories, many of which have never been used. Please check my other items and feel free to ask any questions. I have many more model trains related items and layout material to list soon, so stay tuned. I can combine shipping. I have 100% reputation and strive to keep it that way, so you can buy with confidence of quality and fair price.