Description: Upgrade for people who like to run their Traxxas TRX-4 on extreme terrain, stainless steel center driveshafts which largely reduces the chance of plastic driveshafts snapping. Features a locking ring which provides extra durability and also introduces the possibility of replacing the ring when it's worn out only and not the entire driveshaft. This also results in a much more scale representation of real life driveshafts found in Crawlers. Features: For: Traxxas TRX-4 Material: Stainless Steel & Aluminum Color: Red / Silver Includes: Stainless Steel Driveshafts (2 pcs) Source Yeah Racing: http://www.yeahracing.com/catalog/t...nt-rear-center-shaft-traxxas-trx4-p-4211.html