even though there's nothing difficult about the puzzle, it's a new and interesting shape, and very smooth. if you can solve a domino cuboid (3x3x2), you can solve this entire puzzle with just one algorithm: 2R, U, 2R, U', 2R, the algorithm initially used to place corners in the lower layer. if you've ever solved a tangram extreme, this is the exact same puzzle, just with five side faces instead of six.

Cuboid Seven Axis 3×(5).

Very good quality. Stickerless. Nice turning. Very interesting. Totally recommended.

Nice cube. smooth turns.