699pcs Technic-Parts Technic-Gears Axle-Pin-Connector Compatible with Lego-Technic Technic Cam Worm Cogs Gears Steering Parts Differential Engine Kit.

Please note: the colors of the building blocks are random,The product color in the picture is only for demonstration reference.Instructions not included. Products Included: Technic Gear 40 Tooth,Gear Rack 1 x 4,Gear 12 Tooth Bevel,Gear Rack 11 x 11 Curved,Gear 20 Tooth Double Bevel,Gear 36 Tooth Double Bevel,Gear 8 Tooth with Dual Face and so on. Compatible: Technical parts are compatible with standard sized bricks from other Major Brands.Variety of beam parts etc, can be applied to a substitute for assembly, designing and building your project, like models of robots, cars, cranes, engineering vehicles, Mind-storms and etc Variety technical parts suit for DIY a creative model or create a new design, a great addition do your model stuff. STEM activity kits,Diy toy,MOC EV3 Wedo Mindstorms can assemble freedom to create unique creative.