This line enhances the plain design of the classic screw cap with a variety of materials and customizations. A practical and functional cap now gets a more captivating appearence. We can make for you GPI screw caps in hard plastic, covered in aluminium or wood. While measures are standard, we set no limits to the choice of the colour. Wooden covers can also be in different kinds of wood. Customizations certainly include the addition of signs and logos. The selection of the technique, however, depends on the material of choice.