Mostly filled with 1-5/8" x .083" 4130 chromoly tubing, our boxes are filled full of random length and varying sizes of tubing used for drag racing roll cages . Our boxes contain approximately 15 pounds of tubing pieces, some of which may be bent and/or notched. These boxes are great to use to practice welding roll cage joints or dial in your machine before you start on a roll cage. Save big by purchasing a box or two of our drops at a much lower price than if you were to buy the equivalent tubing in a new full stick!