Build an awesome ball run track with the TRIX TRACK HAMMER SLAMMER by Wonderworld! It's a creative wooden ball run that comes with 6 fun tricks including a gravity hammer, tip and drop, and 5 colored wooden balls. With 28 eco-friendly pieces, it comes with easy-locking system that's easy to build and to create your own layout. Combine with other Trix Track sets to create even larger tracks, more tricks and endless fun.