There are little circles all over the silicone highlight cap,punch through the holes according to your needs,slowly turn the needle to the hole so that the cover won't break.The metal hook helps to pull your hair through the hole. Features - Color: Assorted. - Material: Plastic, Silicone, Stainless Steel. - Size: About 20.50X7.50X0.65cm/8.06X2.95X0.26inch. - One size fit most people, reusable and . - Suitable salon or home for people who likes doing hair DIY dyeing, ultra practical and durable in use. - The highlighting is made of silicone, and comfortable, lightweight and no smelling. - Hair dyeing kit including 1pc hair highlighting cap,1pc metal crochet hook and 2pcs hair tint , meet your basic use. - The coloring hat effectively protects your ears and from getting dirty while dyeing, and hair tint making coloring much easier and neater, you will look more attractive and fashion. Package list: 1 x hair dyeing 1 x crochet hook 2 x