These Claw Clips are made of durable plastic and alloy. The metal spring is covered with plastic, anti-rust and more durable. Round teeth can hold your hair tightly without hurting your scalp, and the strong spring can keep your hairstyle from slipping all day. Using durable and strong springs, with high tension, it can hold the hair well, and the polished clip will not harm your hair and scalp There are 4 teeth at each side of hair grip, interlocking teeth come with strong grasping power so that it can grip and hold your hair in place well. They are strong flexibility, fadeless, and not easy to break.