Gripit TwistIT Self-Drive Plasterboard Fixings have an inner cam section that rotates once maximum torque has been reached. So unlike other self-drives, you can’t overtighten, no matter how hard you try. One Gripit TwistIT fixing holds up to 20kg. Not for use with full motion or cantilever TV brackets or any other object with continuous moving, rotating or vibrating motion. Not suitable for vertical radiators Easy to install, use a drill or screwdriver. There’s no need for pre-drilling or pilot holes and you won’t damage the walls.Select Option Pack of 10Pack of 25 Add to Basket Quantity