Cold wave rods: there are 36 pieces of plastic long perm rods and 1 piece of steel rat tail comb, a practical combination of hair curling tools and enough quality to meet your daily curling needs, you can also share with sisters and friends | Proper size: the hair perm rod measures approx. 8.2 cm/ 3.23 inch in length, and the diameter is suitable, a proper size of cold wave rods for most types of hair, help you create beautiful curls and nice hairstyles | Simple to apply: just use the rat tail comb to separate a small handful of slightly damp or dry hair, and wrap it on the rods; Then use the rubber band to fix it, does not require heating, no harm to the hair; Just wait for a while, you can make a natural curling hairstyle, adjust the direction of starting roll hair in or out can create various hair wave | Quality and reliable material: these long perming rods are made of quality plastic with nice durability, that are non slip and long lasting for multiple usages, safe and no harm to your hair; Each hair roller has several vents for better saturation, helping you create beautiful hair styles like wavy hair, curly hair, fluffy hair, etc | Wonderful hairdressing tools: our hair curling rollers are easy to operate, nice for beginners to DIY at home, also suitable for hair salons, you can use this curler while sleeping or doing housework, it can create nice looking curls for you at any time