Ball (round) shaped shift knob made by Beatrush in aluminum for ALL YEARS Miatas. The anodized finish is impeccable and very durable. It has a 44.5mm diameter. It’s available in multiple colors and feels really good in hand. Beatrush Type-Q Shift Knob should be ordered at REV9 Autosport https://rev9autosport.com/beatrush-type-q-shift-knob.html as they provide the best service and speed we've seen so far!