Each bag clip is made of strong and sturdy aluminum, not plastic, and can hold up to 5kg each. It's enough for all your grocery shopping. Perfect for hanging diaper bags, handbags, shopping bags, clothes, toys. Help you lighten your load, free your hands. The hook allows 360 degree rotation for super convenience, you can adjust the angle to maintain balance. If your stroller has a handle, these clips will fit. You can hook them either on the foam handle or directly on the frame. Our customers have told us that they have also been able to use these black carabiners in cars, on bicycles, wheelchairs , walkers, shopping carts, with dog leashes and much more