This is a Hot Racing Lightweight Metal Front CV Splined Drive Shaft for the Traxxas 4WD electric Stampede and Slash. Features: CNC machined #45 hardened carbon steel, S2 spring steel, and Aluminum construction Replaces factory plastic drive axles Hard Black Anodized Aluminum Slider Blue anodized aluminum pin capture rings with rubber O-rings to prevent movement Design eliminated CV pin setscrew Hardened S2 Spring steel wheel shaft #45 Steel is black finish S2 spring with Brown finish Rubber dust boot to keep the Splined Drive for maximum protection against the elements Includes: 2x Lightweight Metal Front CV Splined Drive Shafts Requires: Installation Removable thread lock (e. g. blue Loctite) on screws threading into metal Light grease for CV joints and shaft slider splines helps maintain their longevity