A very useful item this is a coupler with a built in LED that shines exactly where you want it.
On the tip of the hook to enable you to easily see as you are coupling or uncoupling your 3 links.
Now it's very easy to couple your wagons and carriages.
Comes in a variety of random colours as available.
Uses 3 button cells supplied ready to go.
Pictures show one next to a diorama/wagon (not for sale).
Spare Batteries x 6£2.99