2 Allen Wrenches 3 Bristle Spline Wrenches Complete set of wrenches

These wrenches are the most common used to remove the knobs from the radios. There is no way to know for sure which wrench will work for a particular radio. Since these older units could have been in the shop multiple times and the knobs and/or the set screws could have been swapped from a different radio, making it only a guess as to which wrench to use.