Frame Fixings M10 X 140mm Bag of 10 - A Grey nylon plug with a zinc passivated screw, the plug supports the screw along the full length. The anti-rotation barb prevents the plug from rotating in the hole. Suitable for through fixing which eliminates marking and repositioning of material being fixed. Widely used with battens, windows and door frame fixing. They are suitable for most masonry substrates including concrete and brickwork.