General description Frame fixings designed for securing timber or metal window and door frames to various surfaces including concrete, stone, brick, or blockwork. These fixings are quick and easy to use, allowing for straightforward installation without the need for marking out, as you can drill straight through the frame. Technical specifications Size: M8 x 60mm Maximum Fixture Thickness: 20mm Quantity: 50 screws Other information Anti-rotation lugs prevent the fixing from rotating during tightening. Tough nylon sleeve helps prevent frame distortion during tightening.