The Brother Colour Changer KHC-820A is a complete and boxed accessory designed for knitting machines. Specifically made by the brand Brother, this colour changer is suitable for wool and is tested to ensure quality. It is perfect for those who enjoy crafting and needlework, providing a convenient solution for changing colours smoothly and efficiently during their knitting projects. With clear instructions included, users can easily incorporate this accessory into their crafting process to enhance their knitting experience.