LIGHT WEIGHT: CULBERTA bike pedals are sold in pairs, single pedal size: 5.2(L)*4.2(W)*0.5(H) inches, large area to fit the sole, more comfortable riding; Only 0.41 lb for each pedal, lighter weight, more effective than aluminum pedals to reduce the bike weight for easy handling and low physical output in long-distance riding. STURDY AND DURABLE PEDALS: Strong, lightweight nylon surface + high strength Cr-Mo spindle make the pedals strong and wear-resistant; Withstand up to 220 pounds in mountain bikes, BMX and other high-intensity, off-road riding without worrying about breakage; No worry about weight if just sitting on the bike saddle for normal riding STANDARD 9/16" SPINDLE: Universal 9/16" pedal is suitable for 99% of BMX, MTB, Mountain Bike, Hybrid bike, Ebike, Old School, Cruiser, Folding Bike, Road Bike, Track Bike, Unicycle, Urban Bike, except for a few kids bikes and older bikes use 1/2" cranks. Each spindle has 3 sealed bearings mounted on the inside by sealing rubber sleeves and dustproof covers on both ends, so no worry about dirt, rain or even mud preventing the pedals from spinning smoothly, noiselessly and quickly!