Meccano 6028598 20 Flight Model 20 building models - let your child build 1 of 25 different construction vehicles (models can be built one at a time). parts can be used to rebuild a helicopter, a Buggy crane and much more or kids can mix match pieces for an original design. Real working vehicle - build a motorized crane and bring it to life with the 6V electrical motor. Play with its rotary body and extendable hook! STEM toy: for over a hundred years, erector has been promoting children's STEM (science, technology, engineering, and math) learning as they build and play The Meccano 20 6028598 set is for ages 8+. no batteries required. Includes 406 parts, 2 real tools, 1 instruction guide