Engineer. Weld.  Build!  Real Welding Action!  Kid Safe Welding tool joins pieces with friction!  Pieces snap apart for repeated use - there's no end to what you can make!  Includes over 200 Pieces!, Instruction Guide & Blueprints for the Suspension Tower Bridge.  Includes Battery powered welding pack & tool!  Batteries not included.  Requires 4 D Batteries. Age 8+.