LEGO Duplo basic blocks. 2x2: 30 pieces 2x4: 21 pieces 2x6: 1 piece 2x8: 1 piece 2x10: 2 pieces They have been washed. I used baking soda, so while not all of it is gone, the dirt is removed and I think they are disinfected. Also, since the dirt is removed, they fit together smoothly. Please understand that these are used and may have small scratches before purchasing. I have a few other items for sale as well. #DuploSheepListing The colors may appear different depending on your display. If you have any questions or concerns, please feel free to ask in the comments!