Features: This gear shift knob fits manual and part of threaded automatic transmission. It‘s unique design provides an elegant and fashion driving environment. This gear shift knob can recover the performing as well as you used to and better for car. Easy to install and disassemble. If you can't install, please find a professional installation. Specifications: Color: Purple Material: PMMA,Metal Thread Size: M12x1.25 Thread Inner Hole Diameter 1: 7mm / 0.28" Thread Inner Hole Diameter 2: 9mm / 0.35" Gear Shift Knob Hole Diameter: 12mm / 0.47" Gear Shift Knob Size: 10x5cm / 3.94"x1.97"(L*Max.D) Installation Instructions: Remove existing shift knob. Select correct adapter and install over shifter. Package Include: 1 Pcs Gear Shift Knob 2 Pcs Screws