It is a TIG welded masterpiece made from solid 4MM Stainless Steel Rod. We then have them powder coated racing candy blue. This cage will never rust or corrode. As with all of our cages, your stock body fits over the cage with no modification. Our Cage Only Weighs 16 Ounces!Fits:E-Maxx 3908 or 3903 (WILL NOT FIT THE OLD Short Chassis E-MAXX)You will Receive: 1 304 Stainless Candy Blue powder coated E-Maxx Full Roll Cage and All the Hardware needed to mount our cage. How to mount our cage: Our cage mounts inbetween the front and rear bulkheads unlike other cheap roll cages that mount to the bumper mounts. To mount our cage remove the top two screws on your bumper mounts where they attach to your bulkheads. Then push the X Brace towards the differential and slide our cage inbetween the bulkheads; then use our hardware to attach the bumper mounts through the bulkheads and finally through our cage. Use our locking nuts to fully secure it. To get even more strength in this area, run aluminum bulkheads. Warranty Questions:R/C Raven does warranty all of our cages for broken welds. If a weld were to break you can send it back to us and we will have it fixed and re-polished for a term of one year. We do not warranty bent cages or cages that have been crushed, because no matter how strong we build them, someone will be able to bend it. Not many companies will stand behind their cages like we do, but that is the reason we have thousands of satisfied, returning customers.