Mustad Copper Nails ESLIM Ariat Mens Sport Pardner Matte Rebel Boots It is available in a It is available in a wide variety of colours and comes with the grille in either chrome or tone on tone which as well as being a trademark feature of the KEP Italia helmets is also an integral part of the Air Control System the ventilation system developed exclusively by KEP Italia to ensure optimum internal temperature based on atmospheric conditions There are 12 linings sizes of which the first eight from 51 to 58 fit helmets size M medium whilst the remaining four from 59 to 62 fit helmets size L large The Copper E Slim nail has the same features as the traditional E Slim nail but with the added benefit of the copper coating For years Mustad has been producing copper coated nails for specific regions