Coated aluminum-PVC available in 3 different colors. The core element of the system of the rings. By having the inside covered by a piece of silicon, it offers superior grip and protection to the hair, preventing hair breakage by providing pressure with pliers. Available in 3 different colors so they can be applied to hair extensions of similar tones. They are made of aluminum alloy and coated with resistant colored pvc, which prevents the paint from weang off. Because of their extreme thinness, they are almost invisible, so you can get a more natural look.