This is a handmade handle spinner with the knob made from carved wood. Because it uses natural wood and is handmade, no two are exactly alike. You can have a handle spinner that's uniquely yours. Please refer to the dimensional drawing for measurements. The following Mad Max mounting band is included: Handle Spinner Mounting Band ● Size: Fits handle grip outer diameters of 26-32mm ● Color: Chrome plating ● Material: Aluminum ● Accessories: 3 rubber gaskets The mounting part for the Mad Max band fitting has a 12x1.25mm pitch male thread, so if you remove the knob, it can also be used as a 12x1.25mm shift knob. Shipping will be via Yu-Packet Plus, but it's free. We also accept custom orders. Please feel free to contact "Wood Studio Craft Miya" via their inquiry form.