Length: gentle on plants and the Yo-Yo string is 60" and retractable Package: 10pcs plant yoyos Material: Plastic Color: Yellow If you are trying to train a plant to grow a certain way--you would attach one hook to the plant and another to something else (the pot, the wall, etc.) Let the tension of the plant yoyo pull the plant a bit, then lock the tension button down so it is fixed at that length. Then, after it get used to that position, you can click the button again, adding a bit more tension--pulling the plant a bit more, then lock it down in that position. It makes making these little adjustments so much easier than wrapping a wire or string, then re-doing it over and over again as the plant grows. Instructions for use Attach the hanging hook at the top of your garden Clip the angled hook to the plant stem or branch Secure the string at desired length with stopper