Pro vibe ltd stems carbonthe carbon fibre vibe ltd stem from pro is the ultimate pro level ud carbon and alloy high performance lightweight oversized stem as used by the top pro team professionals uni directional carbon fibre and 7075 t6 alloy construction keeps the weight down while maintaining strength featuresinnovative and secure puzzle clamp system evenly spreads load through the clamp area whilst reducing stem weightthe gapless puzzle clamps interlocking design makes side movement loa