Guidecraft IO Blocks Minis with Tracker Pad and Open-Ended Friction Fit Construction - 75 Piece Set,
75 Pieces.Quarter-size mini version of IO Blocks .Open-ended building toy.12 Unique shapes.Secure, friction-fit interlocking system.Tracker pad and free IO Blocks .Open-ended, fric... Show More
75 Pieces.Quarter-size mini version of IO Blocks .Open-ended building toy.12 Unique shapes.Secure, friction-fit interlocking system.Tracker pad and free IO Blocks .Open-ended, friction-fit construction toy with digital world design roots: IO Blocks now...