Stainless steel screw set Allen top cover Keihin CV carburetor Finally no more Phillips screws that you mess up and that can mess up. Hence the conversion to stainless steel screws with hexagon sockets, i.e. indestructible Complete set of ISO 923 screws including U washers made of stainless steel Attention, it is not a ragged screw set in Din ISO, but the screws have and must have one like the original have a thicker shaft to support the top cover. Please note this little thing when buying screws. Because without the thick shaft, it cracks and the lid tears.