Specification Package:60 pieces of purple color long perm rods Material: High-quality plastic Size: 3.15inches in length, 0.75inches in diameter Feature Durable Cold wave rods hair rollers are made of high-quality plastic, durable, non-slip, long-lasting, and safe to use. Advantage Hair roller curler perm rods are reusable and harmless. You can DIY your hair at home without heat or chemical additives so it will never damage your hair. Protect your hair from the dangers of perming and keep your hair healthy. Easy to use Step 1: Comb through a section of hair Step 2: Wrap the hair around the Perm Rods Step 3: Cover the lid to hold the hair Step 4: keep it for more than half an hour Widely used The cold wave rods can be used on many occasions and there are very easy to use. Different sizes of curling rollers help you create different hairstyles. Notice All dimensions are got by manual measurement, so there may exist some measurement errors, please don't mind. The color of perm rods may be different from the actual color because of the different light and display.