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Heavy-duty aluminum channel pieces are the structural base for building with the TETRIX® building system. Comes in five different lengths for flexible building – also, pieces can be cut to custom lengths with a metal-cutting blade.

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From $9.95

This pack offers 70 additional structural elements, perfect for outfitting classrooms or robotics competition teams with an assortment of building and design components.


  • Channels in every length
  • Variety of flats in every length, as well as flat brackets, bars, and plates
  • Assortment of brackets such as corner brackets, inside C connectors, and angle corner brackets, along with angle bars and round spacers


Two-sided brackets fit the outside of TETRIX® Channels and can be used to bookend a channel to secure it to another structural element.


Brackets with 90-degree angles connect structural elements. Made of heavy-duty aluminum.


Perfect for connecting structural elements or for creating a servo leverage arm. Made of heavy-duty aluminum.


A three-sided bracket that fits inside TETRIX® Channels? You bet! This connector helps to create perpendicular joints when space is tight. It can be placed facing out of the end or the open side of a channel. The connector is very strong as it attaches to two sides of the structural element.


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