Dash & Dot can use building brick connectors to play with your existing toys They are compatible with Lego bricks, Technics, Mindstorms kits and Hero Factory. Each pack comes with 4 connectors.Transform Dash & Dot into an airplane, a cookie dispensing machine and more with Building Brick Extensions and LEGO bricks. Take on your own design challenge, plan out your design, and then start building. After youre done transforming your robot, you can bring it to life through code. Building Brick Extensions are compatible with Dash & Dot robots by Wonder Workshop. Dash and Dot robots are sold separately.