Aluminum Square Tube 6061-T6 (1″ x 0.125″ wall). This is commonly used for DIY climbing sticks. These are plain tubes with no holes pre-drilled by default. Standard 24″ tubes are roughly 16.3oz.
If you have a design in mind for a tube that is lighter or of a different size, let us know and we can custom cut your tubes for you for an additional cost.
Check out SaddleHunter for lots of information related to saddle hunting.