Features: Restore your vehicle's transmission. Fix the dust jackets and limit the position. Securely retain your shift boot to the shift knob. High quality material, durable in use, universal for various car. It can solve the problems that the dust jackets not fixed and the position defective. Easy to change your favorite gear shifter. Specifications: Material: Aluminum Hole Dia: Approx. 12mm/0.47in Color: Red/Black/Silver Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Shift Knob Retainer; 1x O-ring 1x Wrench 3x Screws