Trem Blocks. Or should one say, "Tone blocks". Yes - these are ideal for blocking out your Floyd Rose or other tremolo system. Save yourself the trouble of looking for the ideal piece of wood and if you find it, having to shape it down.  These blocks will save you the trouble as they are already very close to spec (roughly 1" X 2 X .225") for most applications.  Tone matters. Guts matter. Every little bit helps and it all adds up. Useful for inlay stock, etc.