Forgefix w c fixing kit white cap forgefix wcfk680 the forgefix w c fixing kits are strong and reliable they are extremely easy to fit and the decorative caps leave an attractive clean finish the edge of the plug cleanly closes off the drill hole in the porcelain and enables the cap to snap fit securely the zinc screw with hexagon and part flat shank enables straight forward installation designed for fixing sinks and basins size m6 x 80mm forgefix wcfk680 w c fixing kit white cap m