All metal parts are made of CARBON STEEL (a metal that is stronger and more durable than stainless steel). Helps regulate the correct amount of pressure applied to your lashes. Built-in Comb is designed to smoothly separate your lashes, creating a perfect curl, unlike conventional eyelash curlers which may cause the lashes to overlap and twist in different directions. Built-in comb helps to separate lashes. SPRING-LOADED HINGE helps regulate the correct amount of pressure applied to your lashes. Unique design of the peach heart handle, the appearance of beautiful and lovely, with anti-skid function, easy to pinch. ERGONOMICALLY DESIGNED HANDLES make it easier on your hands and fingers. Fits all eye shapes and sizes, and create the most lift and curl for a gorgeous, eye-opening look that takes seconds to achieve, and will last all day. Will Create Long, Curled Lashes, Making Your Eyes More Noticeable.Built-in comb, make eyelash ordered keep clear.Fits the eye shape, not easy to be caught on the eyelid, Easier to pinch the roots of eyelashes.