SPECS: 4140 carbon steel tubing, hardened to Rc 49-59, with Black Chrome or Electroless nickel-plated finish, or 7075 aluminum tubing. Available in 16", 21" and 26" extended lengths. 16" - 6" retracted length, 16 oz. wt. 21" - 7¾" retracted length, 20 oz. wt. 26" - 9½" retracted length.