Another Rockstar collaborative design has arrived! This shift knob has a slightly bolder design than most. This limited edition Rockstar shifter is constructed from three different components: 303 billet stainless steel core, 6061 billet aluminum accents, and a thermoplastic handle insert. The thermoplastic handle helps protect against any extreme hot or cold surface temperatures, so thereâ€™s no fear of shifting during those months of extreme temperatures. This Rockstar shift knob weighs in at 476 g and comes with four plastic inserts for fitment on a wide variety of vehicles.