Purple 175G Metal Shift Knob Automatic Throw Gear Shifter Selector 10X1.25 K61 Made from SOLID weapons grade 6061 aluminum. THESE KNOBS ARE NOT PAINTED. They are Hard Anodized for long lasting color and finish. 50mm (2") Diameter. Weighted at 175g (6.2oz) for increased positive shift. Design feels super smooth and ROCK-solid.