This listing packing including variety technical parts, total 270 pieces. Technic parts pack, compatible with LEGO Technic parts,The color is random.
Many kinds of Gear Differential Gearbox rack, pin connector with/without friction, Track Tank Wheel, Chain Link, Shaft Sleeve, Shock Absorber and Cross Axle Series and etc.
STEM activity kit,DIY creative model, can be freely assembled to create new design.Perfect compatibility, easy to assemble and disassemble, good compatibility between brick parts, neither loose nor tight.
Various accessories can be widely applied to MOC model construction and creation.
Variety of gears axle parts, can be applied to a substitute for assembly, designing and building your project, like models of robots, cranes, engineering vehicles. Fun and useful,a great gift choice for building block lover.