The Construct It Build-ables 2-in-1 Construction Set lets early learners practice the basics of engineering play as they use the included tool kit to put together two cool construction vehicle toys to enjoy. The set’s instructions are designed to be easy to follow with pieces that snap into place to form a cement mixer and a bulldozer. Features: Build two cool construction vehicles. Learn the basics of engineering and STEM as the set comes together. A unique creative experience for young learners. The set contains 39 pieces and includes all necessary tools. It includes easy to follow instructions so young learners can put it together without frustration. Enjoy building and playing while developing mechanical skills. The packaging doubles as a hard carrying case so no pieces ever get lost. It is suitable for ages 3 and up.