This is a shift knob made by combining walnut wood and discarded skateboard decks. It is approximately 50mm wide. Please understand that there may be slight dimensional errors. The mounting thread is M12 P1.25. Unused after production. This is a handmade item. The quality is not bad, but if you are looking for a perfect product, please purchase one from a car shop. Shipping will be via Sagawa Express or Letter Pack Plus. Price reductions are not possible. Thank you.