Grow Bones™ Premium Branch Spreaders - Case / 24-Pack For the serious grower who demands control and performance, Grow Bones are a precision-designed plastic branch spreader that gently trains your plant's branches outwards, allowing for increased airflow and light penetration. Built tough and designed for repeat use, they're the go-to tool for growers who want precision control over plant structure and spacing. Packages contain 24x15 pieces in 3", 4½" and 6" lengths Key Features: Easy to apply — no tying, taping or staking Increases airflow and light penetration Encourages and supports outward growth and an overall stronger structure Reusable season after season Patent-pending ergonomic design. Proudly designed and manufactured in the USA.