The Yo Yo Plant Supports Automatically Tighten As The Plant Grows, Simple To Use & Effective Plant Supports Ideal For Tomatoes. designed To Secure, Support & Train A Variety Of Unruly Or Heavy Cropping Plants In Their Desired Position. The Yoyo Comes With A 1.4 Metre Line That Is Fully Retractable. Ideal For Fruiting Plants Such As, Tomatoes & Other Vine Crops. Can Also Be Used To Support Heavy Cropping Trusses.simply Wrap Around Your Plant & Secure Around The Stem With The Hook & Watch Your Plants Grow Straight & True.ideal Plant Supports For Tomatoes & Other Vine Crops. simple To Useautomatically Tighten As The Plant Grows 1.4m Line Is Fully Retractablesupplied In Packs Of 8