These aluminum box extrusions are robust and lightweight solutions for custom robot frames, superstructures and mechanism construction. Description Specifications Documentation Made to all of your favorite English sizes, the classic 2x1 thin wall tubing is now joined by its thicker-walled counterpart. We have also introduced two thicknesses of 1x1 sizes that teams know and love to build their medium-sized mechanisms as well as 1 1/2x1 1 1/2 and 2x2 thin wall square tube for telescoping climbers.If you need your tube to include pre-drilled holes please see this page. Available Sizes: am-3214 - 2 x 1 x 1/16 in. 6061-T6 alloy am-4205 - 2 x 1 x 1/8 in. 6061-T6 alloy am-4203 - 1 x 1 x 1/16 in. 6061-T6 alloy am-4204 - 1 x 1 x 1/8 in. 6061-T6 alloy am-4669 - 1 1/2 x 1 1/2 x 1/16 in. 6061-T6 alloy am-4670 - 2 x 2 x 1/16 in. 6061-T6 alloy am-2580 - 3/4 x 1/2 x 3/64 in. 6063-T6 Aluminum All lengths are (+/- 1in) Be sure to all check out our Gussets as they work great with these wonderful extrusions. Material: Aluminum