These attach any of the following car seats onto a Bugaboo Cameleon (any version) buggy base. I used them for a Maxi Cosi car seat.
Bugaboo Turtle Air by Nuna, Nuna Pipa Lite®, Nuna Pipa Lite LX®, Nuna Pipa Next
Cybex Cloud Z i Size, Cybex Aton M i Size®, Cybex Aton Q®, Cybex Aton 5®
Maxi-Cosi Pebble®, Maxi-Cosi Rock
BeSafe iZi Go Modular®, BeSafe iZi Go X1®
Britax Römer BABY-SAFE 3 i-SIZE, Britax Römer BABY-SAFE iSENSE, Kiddy Evolution Pro2®, Kiddy Evoluna i-Size2