The Rawlplug KKS-R Frame Fixings for fixing timber or metal window and door frames to concrete, stone, brick or blockwork. Quick and easy-to-use, no marking out, drill straight through the frame. Anti-rotation lugs prevent rotation of fixing during tightening. Tough nylon sleeve prevents frame distortion during tightening. Available in a variety of sizes and pack quantities. These Rawlplug KKS-R Frame Fixings are supplied with screws and have the following specification: Size: M8 x 60mm Maximum Fixture Thickness: 20mm Pack Quantity: 50 RAW21320