Selected Material: These crochet holders are made from lightweight aluminum, ensuring durability and resistance to fading, while being easy to open, close, and carry. 6 Sizes: This set includes yarn stitch holders in six sizes: 6 cm (2.4 inches), 9 cm (3.5 inches), 12 cm (4.7 inches), 15 cm (5.9 inches), 17 cm (6.7 inches), and 20 cm (7.8 inches) to accommodate various knitting needs. A Set of 6: The set features 6 needle holders, each in a different color for easy size differentiation, with cheerful colors that enhance your crafting experience. Special Design: These stitch holders boast a secure and unique fastener that prevents loosening during use, serving as an excellent tool for knitting. Wide Range of Applications: Ideal for knitted projects like blankets, scarves, quilts, and leather, with a safety lock design that effortlessly clamps the thread without causing jams.