Lowest design, extreme durability So that the iBASE 2.0 can be installed or removed without the need for tools, it has been designed to include a central screw. Although these designs are normally built relatively high, Duotone engineers have found a solution for making the iBASE 2.0 the lowest base of its kind. Because there is nothing in the way, the risk of injury to feet and toes is kept to a minimum. In contrast to conventional mastfoot bases made of Zytel plastic, the iBASE 2.0 is the only one produced using a much stiffer material known as POM, thus improving the durability.