1. Material: aluminum alloy + acrylic 2. Delicate touch, wear-resistant and non-slip 3. An extra layer of protection, effectively protect your car and ensure driving safety 4. Manual gear: the reverse gear cannot be used if it is lifted up 5. Automatic gear: the one with button cannot be used 6. The gear knob that cannot be removed cannot be used 7. Size: 60x79x25mm