Usage Tips:PACKAGE INCLUDED10 PCS Roller Hooks l METARIAL: weather-resistant, well against aging, high temperature, rot. Not easy to crack.PROFESSIONAL SUPPORT KIT: Roller Hooks are the preferred method of support for expert growers and are an especially efficient use of space. Overhead hooks trellis hooks are ideal for high tunnel tomato production but can be put to use indoors or out to create vertical gardens in any setting with sufficient support. Each tomato plant is given one string running from floor to ceiling on which to climb that is attached to the overhead roller hook.WIDELY USED ROLLERHOOKS: Roller Hooks can be used in traditional greenhouses, hoop houses, or along fences, under arbors, or on patios so long as a secure overhead attachment point is available. gardens to maximize rooftop, balcony, and small allotment gardens to dramatically increase harvest yields in a limited space setting.FEATUREThe is a state of the art trellising hooks. The unique design of the rollerhook enables the worker to easily, rapidly and safely lower and lean tomato or cucumber plants.