Spank Wing 12 Vibrocore Drop Handlebar Diameter: 31.8mm 440mm Drop: 110mm Reach: 72mm BlackAward winning Vibrocore foam core provides vibration damping proven to reduce arm pump and hand numbness 12 moderately flared, medium width drop bar balances off road performance, with on road aerodynamics and comfort Short 110mm drop and 72mm reach geometry is perfect for aggressive riding stance and long days in the saddle on mixed terrain 8mm bar clamp zone, and aerodynamic ergo top section enhances hand comfort over longer rides, without limiting