printing - The model of the corresponding crochet is printed on the end of the crochet, you can clearly and quickly identify the crochet you need. ing - The heads of these crochets have been polished to make them smo and will not catch the thread. Storage bag - woven tool set is equipped with a leather storage bag, which is convenient for you to store and very portable. High-quality materials - woven tool set is made of high-quality aluminum alloy materials, high quality and durable. : : 8 Small Sizes: 1.0/1.25/1.5/1.75/2.0/2.25/2.5/2.75 mm Material:Soft plastic + Galvanized iron 8 Medium Sizes: 2.5/3.0/3.5/4.0/4.5/5.0/5.5/6.0 mm Material: + Overall Length: Approx 13.5cm (5.3") Package Included:1 * Crochet hook kit (16 included)