J-Specialty Anodized Black Aluminum Round Gumball Shift Knob with Extender M10x1.25 Thread for Manual Trans for Mazda 3, Miata, Genesis & Evolution Anodized Aluminum Finish Round Ball Shift Knob 2 Inches 185 Grams (6.5oz) Thread Pitch is M10x1.25 This Shift Knob is made from Billet Aluminum CNC Machined Includes 3.5 Inch Extender Will Only Fit Manual Transmission