Non-Slip Lock on Rubber, dual-side locking mechanism for extra security. Durable rubber material, designed for lasting performance.Standard Size: length of bicycle grips is 140mm/0.551inch ,Inner diameters: 22.2mm/0.87inch, fits for handle bar of bike, great replacement grips for BMX, mountain, MTB, beach cruiser, scooter, folding, downhill, commuter, city bike etc.Bike Handlebar Grips, perfect for mountain bike riders. Ergonomic Comfort, soft and ergonomic design for a comfortable grip.Ergonomic Design: Ergonomic grip design can support from index finger to thumb, offering best grip for natural state of riding.Ergonomic palm rest design can fit your palm well, preventing wrist from deviating, reducing pressure and relieving ulnar nerve.Bicycle Handle Grip, fits most bicycles, scooters and BMXs.