The entire exterior of the 680XA is coated with an exterior grade primer to resist corrosion. Manufactured of structural sheet tubing Sch 5 or Sch 40, 4", 6", 8". Also comes with 3 stabilizer rods (3/16" diameter) located 24" from the bottom of the well protector. These rods can be bent to any position to help stabilize the protector during installation.