This is a "Clip 10" adaptor which attaches theGraco Snugride 22 or 35 Classic Connect car seat to a Mountain Buggy mini or swift stroller. https://mountainbuggy.com/ca-en/Buy/car-seat-adapters/car-seat-adaptors/MB-mini-swift-car-seat-adaptors/MB-mini-swift-car-seat-adapters/clip-10 Check out our related ad where we sell the fitting Graco SnugRide 22 infant car seat.