Characteristics : This product is compatible for use on gear sticks of most automobile brands. Assembly instructions: 1. Dismantle the original extension of gear stick. 2. With the enclosed adaptors measure the circumference of gear stick and then put the suitable adaptor on the edge of gear stick. 3. Unscrew the bottom ring of the shift knob and put it on the gear stick. 4. Put the knob on the gear stick and screw it tight with the enclosed spanner. 5. Screw the ring back on the already attached knob.