On Track Children's Puzzle Blocks by Jill McDonald Kids. Nine blocks...six puzzles...loads of fun! Each set of Jill McDonald's block puzzles features 9 blocks that create 6 different puzzles. Overall measurement: 6" x 6" x 2". Each block measures 2" x 2". For ages 3+.
Please note that sizes vary from manufacturer to manufacturer. Additional size charts are added as they become available.