Red Bubble Shift Knob For Automatic Throw Gear Drift Shifter 6" 8X1.25 Made from high grade acrylic THESE KNOBS ARE NOT PAINTED. Maintains color and shine for a long time to come. Weighted at 272g (9.6oz) for increased positive shift. Starts at 48mm (1 14/16") and tapers down to 34.2mm (1 5/16) at the base. This drift knob is 152mm (6" long)