Ergonomics: Bike handlebar end caps, ergonomic design, provides a comfortable and relaxed grip, perfectly fits your hand posture, helps reduce pressure on the palm and joints during long-distance riding, and prevents muscle strain on the upper arm. and muscle pain for a comfortable ride. Nylon Fiber Composite Material: Bike Handlebar Grips, made of lightweight and durable nylon fiber composite material, each pair weighs only 92 grams, allowing for lightweight construction, reducing the weight of the bike and improving performance. Easy to install: Bike Handlebar Grips, the handle is marked L for left and R for right. Please note that for external installation, the L handle should be installed on the left and R should be installed on the right, while for internal installation, the L handle should be installed on the right and R should be installed on the left. Widely Applicable: Bike Bar End, compatible with standard handles with a diameter of 21.8-22.2mm, suitable for a variety of bicycles and mountain bikes.