The play possibilities are endless! Transform Dash & Dot into anything you can imagine using your favorite building bricks, including Lego® bricks, Technics, Mindstorms kits, and Hero Factory (not included). Simply snap on and start building! Building Brick Extensions can be snapped on to any of the six connection points on Dash's head or body. Building Brick Extensions can be connected at 90 or 45 degrees (i.e., straight up and down, forward, backwards, or diagonal). Rotate and snap them in to build and play! Each pack comes with four connectors.