
Before purchasing I went through the specs and "questions" to make sure they were the same size and had no issues with the new translucent work which the company also offers. Since I could not find any information anywhere, I asked the seller himself, and he replied that they really connect and complement each other. I bought a set of each. They snap together easily and are more versatile than blocks that just snap top to bottom. Good for counting, grouping and sorting, patterns and other math skills. The 5 year old who got them told me they are also good for making robots and such.

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