Infinikey LedZep is a keyset that is available to buy through a Group Buy.
Keyset: The set of red, cream, and black keycaps you see here. Buying a keyset does not include a keyboard. You need a mechanical keyboard to put these keycaps on, which you'll have to buy separately. Here's a Wirecutter guide on buying one.
Group Buy (GB): a pre-order for this keyset. This set will be manufactured after the GB period. If you join this GB, you'll receive the set after production is completed.