Super-Size Block Kit - Even Bigger Blocks. The
standard Unit Block is 1-3/8 thick by 2-3/4 wide by 5-1/2 inches long.
Super blocks are 1.5 times as wide, but cut to standard lengths. Thus,
the middle sized block is 1-3/8 by 4-1/8 by 5-1/2. These make nice
foundations and are good additions for children who have been playing
with video cassettes. This is now fading, but for a long time
mothers could start their kids with these cassettes and could see how
much kids enjoyed them. Now, alas, they've gone the way of the
8-track but they sure were fun while they lasted.