This puzzle has six pieces in the same sort of arrangement as the traditional burr, but with different shapes. It has the interesting property that the inside is completely hollow, so all shapes are completely visible in the solved state. The first piece comes out immediately, but it requires nine more moves to remove the next one.
Puzzle is 2cm long in the solved state.
4.374 w x
1.974 d x
1.722 w x
0.777 d x