Safe and Secure GripThe spring collars clip provides superior grip to securely hold the plates in place, strong enough to support heavier weights for a more effective and safer workout routine. Easy to UseOnly gently press the rubber handles, you can easily slide in and out of the dumbbell ring. It can be easily operated with one hand, open and close with one push, helps you easily put on and take off to change weights. Safe for exercising ExerciseThis spring clip clamps the plates tightly onto the bar, prevents the plate weights from sliding off the bar. Make sure you stay safe when performing snatches, squats and various presses. Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to the actual item received.