Bi-Plane: Erector Design Starter Kit #2729 With the Erector Design Starter Kit, everyone can easily build an Erector vehicle Each kit includes 60 pieces and can be used to build one model. Includes extra pieces. Collect all 6 Design Starter Kits of this series to build a bonus Catamaran There are 6 models in this series (EACH SOLD SEPARATELY): Sandrail, Tractor, Loader, Bi-Plane, Helicopter, Motorcycle For ages 8+