I thought a 2x4 is what glock uses for their gripsGuys, if it is a 2wd truck, it is a 4x2 not a 2x4. A 4wd is 4 contact points and 4 drive points, hence 4x4. A 2wd is 4 contact points and 2 drive points. A 2x4 is a piece of wood you buy at Home Depot or Lowes