Flex Craft Tubing is available in a variety of different sizes including 1" x 1" perforated steel, 1" x 1" T6-6061 Anodized Aluminum and 1" x 2" perforated steel.  All three include 5/16" holes that are 1" on center.  With the perforations, it allows for quick changes when needed.  Also allows for plug-n-play accessories such as tool holders, cup holders, spool holders, just to name a few.  5S with any of the 8 colors available.