With the help of our adapter set you to easily turn your one2two by BabyDan stroller into a twin, triplet or sibling stroller. The adapter set is therefore a perfect solution for you, if you have more than one child, as the adapter set allows you to take several children out and about.The adapter set contains 3 parts. Two assembly buckles, which are used to connect the strollers at the hoods and at the rear wheels, as well as an extra common wheel, which is put on both strollers, where they meet at front.1 pcs. adapter set is used for 2 strollers. If you want to assemble 3 strollers, you must use 2 pcs. adapter set.