Feature: -Made of high quality aluminum alloy, durable and long service time. -Comes with adapters in 3 sizes, meeting your different requirements. -With spiral rubber ring design, simpler and more stable installation. -Direct Replacement of original shift knob, no modification needed, easy to use. -Suitable for almost all manual transmission cars with round gear cylinder. Specification: Material: aluminum alloy Size: approx. 13*3.2cm Diameter:1.5cm Size of adapter: 8mm/10mm/12mm Package included: 3PCS* gearshift head 9PCS* adapters