Gripit Plasterboard Fixings are designed for use with all types of plasterboard installation. The unique Gripit wings fold out in small cavity spaces to create a vice-like grip. Gripit Red Fixings allow you to fix large shelves to plasterboard walls. One Gripit Red holds up to 74kg. Easy to install, you will require an 18mm drill bit. They are also removable and reusable. Each Gripit Red is supplied with a 5.0 x 30mm screw. Ref: UTTK3246