The "boxed" version has round beads and the beads are about 1/2 bead apart.
There is a very similar, but unboxed version, made by "Square Root". This version has flattened beads along axis in which the hole is drilled. The 4x4 grid of pegs is also closer together.
It would seem that Tader Products is the importer/distributor and that Gamesmith Products was the manufacturer in Taiwan.