The Silver Reed YC6 Yarn Changer is the perfect accessory for your SK280 or SK840 Silver Reed knitting machine. It allows you to automatically change the 2 yarn colors in the carriage from 4 yarns held in the changer at the press of a button, making it easy to create beautiful and intricate patterns. The YC6 is easy to install and use, and it comes with a detailed instruction manual. This yarn changer can be used on both single and double bed combinations by changing the head angle.