Using these crochet hooks is easy. Just hold the soft ABS handle and start your knitting or sewing project. They are suitable for a wide range of works, like making sweaters. When it comes to care, simply keep them in a dry place. Avoid using them with sharp or rough objects to prevent damage to the aluminum hook head. Also, remember that because of manual measurement, there might be a 1 - 3cm deviation in length, and the color you see on screen may differ a bit from the real product due to monitor and light effects.