Customize your big rig with ease! American Shifter’s Semi-Truck Shift Knob Adapter allows you to install any shift knob with an M16 insert on your semi truck. Choose from millions of shift knobs or customize your own with American Shifter’s large selection of shift knobs.American Shifter’s unique design fits all semi truck shift knobs including transmissions with or without a splitter. Ideal for 7L, 8, 8L, 9, regular 10 speeds, 7LL, 8LL, 9MLL, Super 10, 13, 15, and 18 speeds. Easy installation and includes machined screws for direct bolt-in installation.FEATURES- Heavy-Duty Zinc Plated Alloy- Chrome Finish- Machined Button Head Screws- Fits Mack, Kenworth, Volvo, Peterbuilt, Freightliner & More!- Direct Bolt-In Installation- Fits Transmissions With or Without a Splitter- Install Any Shift Knob With An M16 Insert- Detailed Instructions- Limited Lifetime WarrantyAll American Shifter products come with Detailed Instructions and a Limited Lifetime Warranty.Choose American Shifter Company and Shift With The Best!---------- :: SEMI TRUCK SHIFT KNOB ADAPTERFitment :: Mac, Kenworth, Volvo, Peterbuilt, Freightliner, More!Material :: Zinc AlloyFinish :: ChromeIncluded :: Machined Button Head ScrewsMethod :: Direct Bolt-On InstallationApplication :: Transmissions With or Without SplitterFits All M16 Shift Knobs :: YesBase Thread :: M16 x 1.5---------- :: OTHERInstructions :: Detailed InstructionsWarranty :: Limited Lifetime Warranty Get Instructions Item ID SKU ASCAD38 311860