Here you can order the Yonex AC620BD BADM String Hook. This hook is ideal for easily getting the cross string into the so-called shared holes. The tubing through which both the main and cross strings must pass is (usually) blocked by the main string. By slightly moving the main string to the side with this hook, you can easily get the cross string through the tubing. This saves a lot of time and frustration during the stringing process.