Durable accessories for daily use: The trigger snaps can be used in many ways, such as a lock to a small cage, a connection between 2 things, such as a hook. The trigger snap hook is widely used, you just pull down the trigger and it will open to 0.47 inch maximum. when you release it, then it will reset.

Overall size: 2.32 x 0.82 inches
Inner diameter of the lower ring: 0.47 inch
Inner diameter of upper side: 0.47 inch
Opening: 0.47 inch maximum
2 Choices of quantity: 10PCS/20PCS