Each Rocknob is handcrafted gear shift knob. Made from 100% natural river rock found in the mountains and deserts of the west. We custom select each Rocknob to fit comfortable in the palm of your hand. Carved into every rock is a unique petroglyph, found only on an authentic Rocknob. IF you or your car love the outdoors, you need to Rocknob! So grab a piece of Mother Earth and rock your stick.