The PRO Dual Lock Sport Grip is a durable and comfortable grip with dual lock rings. The first is a traditional lockring on the inner edge of the grip, while the second is an internal lockring on the outer edge. HIGHLIGHTS - Dual lock ring MTB grip. Dual compound construction. Pressure optimized core for enhanced pressure relief. Internal lockring on outer end. Alloy lockring on the inside edge. Sizes: 30mm and 32mm diameter