Dural anodized base with countersunk thread 5/16 "UNC for classic Mini. Shift head is vacuum cast from polyurethane resin into a mold. Head diameter 5 cm (1.97 inches), weight 80 g.
 
Hand-cast, always as a unique piece in a unique color combination.
 
If you are interested in a gear knob in your own color combination that fits your car, write me a message.