$5.99 (as of August 21, 2020, 4:45 pm)
Works with Cubelets. One single yellow magnetic brick adapter in a ziploc baggie. I bought a set of 4 because my children lost one when they checked out a kit from our library. They don’t come in individual units so I had to buy 4! And they are not cheap. So if you (like me) only need one, this is the listing for you! Ships to USA Only via 1st Class US Mail. No returns!