Cropped Head Greenhouse Bolts and Nuts with hole Create hanging anchor points for your climbing plants in your greenhouse easily, for hanging watering systems, light baskets, plant lights, tying wire, trellis, twine, canes etc. for climbing support for your climbing plants grapes, tomatoes, cucumbers, etc. Greenhouse Bolts and Rings Made from high quality aluminium greenhouse bolts and nuts with stainless steel rings, they are robust, corrosion and rust resistant and can be reused over time. Ideal for use in all aluminium framed greenhouses. Use for Greenhouse Hooks You simply insert the greenhouse bolt into the groove of the glass rod and turn to secure it after tightening the nut, then thread the stainless steel ring through to create a secure hanging anchor point. Easy to use for experts and novices alike.