Technic sets come typically characterized per presence of favorite pieces, like gears, axles, diaper pins, & beams. A select few sets besides accompany pneumatic pieces or electric motors. Around recent years, technic pieces keep around begun filtering down into more Lego sets too, virtually all notably a Bionicle sets (some of which were sold when a portion of the Technic line), also as a dandy several others.

Mindstorms, Lego's line of robotic products, also utilizes the big total of technic pieces, although these are sold as a seperate line of products.