I've just replaced the original gear knob as the steel insert with the shift pattern layout had lifted slightly and was no longer flush with the leather leaving a slightly rough/sharp edge. The new item from 124 Spider UK has been milled from what appears to be solid aluminium leaving a beautiful high quality satin finish that along with the shape, is very tactile and a joy to use. It cost £50 including delivery and is a direct replacement for the original. Although this may seem completely implausible, it has made the shift itself smoother as its more precise than the more cumbersome original. Overall I'm delighted with the item and would highly recommended it if anyone is looking to replace their original gear knob.