Manual Shift Knob Knobs Chrome Blue Ledlight 37b PUSH TOP CENTER TO ACTIVATE LIGHT: 3 FUNCTIONS: STAY LIT, ALL LIGHTS FLASH TOGETHER, OR FLASH IN A CIRCLE, OR OFF. EASY INSTALL COMES WITH ADAPTORS AND SCREW WITH ALLEN WRENCH HEIGHT: 2 1/4" WIDE: 2" AT TOP Inner Diameter 15mm /.6 Inch CHROME WITH CARBON FIBER LOOK ON TOP IN THE CENTER WITH BLUE LED LIGHTS AROUND UNIVERSAL DESIGN, FITS MOST CARS GET A GREAT CUSTOM LOOK FOR YOUR VEHICLE