Each tool has been scanned in a CAD CAM system and a computer controlled milling machine then cuts out each tool's exact shape in a three-coloured EVA foam block.
.5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm The 12 point ring head is set at a 15° angle to facilitate use even on flat surfaces All ring heads are equipped with the Teng Tools "Hip Grip" system which means the contact surface grips on the flat surfaces of the nut rather than on the corner. The top layer of the foam is black, the intermediate layer white and the bottom layer red, so that as soon as the tool has been removed its position is clearly visible in red. This means that if a tool is missing it is not only its position that is clearly visible, but you can quickly determine which tool is involved.