Entrac Comfort Lock-on Bike Handlebar Grips - Ergo Rubber Cycling Bicycle Grips - Ergonomic Shape and Vibration/Shock Absorbent TPR Minimizes Fatigue Numbness and Hurt MINIMIZED DISCOMFORT, FATIGUE, AND NUMBNESS - Shaped to ergo fit the rider's hand to minimize fatigue, discomfort, or numbness from long or rough rides ENGINEERED OPTIMAL RUBBER ELASTICITY - Enhanced comfort, non-slip traction, and shock-absorbing DURABLE RECYCLABLE RUBBER - Made from durable recyclable thermoplastic elastomer rubber, aka TPR/TPE or Kraton CNC-MACHINED ALUMINUM LOCK RING - Precisely machined and anodized to gray/titanium look STAINLESS STEEL LOCK RING SCREW - Anti-rust and durable, survives long rides under rough weather conditions