All cuboids are fully functional. Includes 1x2x5, 2x3x3, 2x3x4, 3x3x4, 3x3x5, 3x3x6, 3x3x7, 3x3x9, 3x4x5, 4x4x5, 4x4x6 and 5x5x4. Some of which are the circle / crazy / super type. These terms are not used consistently by producers so apologies for any confusion.
The puzzles are from a number of different sources. Orders are dealt with through the respective suppliers on their secure websites.
The newest addition is a custom made fully functional proportional 3x3x5 plus a cheaper non proportional one.