Rubber V-Block Only for Extreme Max Transom Saver. As your outboard nestles into the Transom Saver, the rubber V-block becomes its lone contact point, providing both a natural shock resistance and a soft touch that prevents the lower unit from contacting the metal portions of the Transom Saver. See Extreme Max 3001.1068 Angled Transom Saver, Extreme Max 3005.3852 Straight Transom Saver, or Extreme Max 3005.3855 Straight Transom Saver for the full Transom Saver unit.