We use these aluminum rails as guide rails that the v-groove bearings ride along. The aluminum specification is 6061-T6 which is known for its structural characteristics.
Made out of high strength, high quality aluminum. This is used with our v-groove bearings, as tracks, for things like our gantry setups on our machines.
The actual dimensions are as follows:
Inside Dimension 0.5830 inches
Thickness 0.13 inches
Outer Width 0.751 inches