Description: MATERIAL: bike pedal extenders are made of high quality chrome molybdenum steel, waterproof, sturdy, and durable, and have a long life. EXTENDED PEDAL PROTECT: Extended from the crank gives you comfortable riding and avoids your keel leg scratch with your bike. Used with knees track outside the pedal by adding length to the pedal axle, prevents knee strain, and reduces rubbing against the rear tire or frame. EASY TO USE AND INSTALL: Featured by unique L and R markings, easy to distinguish between the right and left extenders. WIDE APPLICATION: Bike pedal extenders allow you to attach this set includes any standard 9/16 inch threaded pedal bike, BMX, folding, mountain, downhill bike, folding bike, tricycle, or race bike. EASY RIDING: Fitting bike pedal extenders can help you adjust your riding stance and will allow you to cycle in a more natural position. They will perform just as well on longer journeys too. Specification: Material: Chrome Molybdenum Steel Size Chart: Length 3.2cm/1.26inch, thread length 1.3cm/0.51inch Package Includes: 1 Pair Bike Pedal Extenders