Shift Knob - Monkey Wrench Shift Knob - M12 Pitch 1.25 This is a one-off custom shift knob. A nut has been welded to a monkey wrench, polished, and then clear coated to prevent rust. The monkey wrench is a used item, so there may be scratches and dirt. Also, there are small scratches from polishing, so please refrain from purchasing if you are concerned about this. The angle may not align during installation. In that case, please adjust with a double nut, etc. Please examine the product photos carefully before purchasing.