Instead of 20 50x50x10mm I received 16 pieces 44x42x8mm and 45x38x9mm 9 pieces. I need you just as chocks, since it is not so on it, but up to 24% to be across the board in addition to the specified level, which is quite remarkable. I assume that the 5 extra wedges are intended as a consolation prize, that's why there's only one star less.