Description: STAINLESS STEEL MATERIAL - bicycle pedal extenders are made of high quality chrome-molybdenum steel, waterproof, rustproof, corrosion resistant and have a long service life. EXTENDED PEDAL 20MM, PROTECTS YOUR KNEE - Extended 20mm from the crank gives you a comfortable ride, avoid your knee or leg from scraping against your bike. Used with knees that track outside the pedal by adding length to the pedal axle, preventing knee strain and reducing rubbing against the rear tire or frame. EASY TO USE AND INSTALL - Equipped with unique L and R markings, easy to distinguish right and left extenders. WIDE APPLICATION - bicycle pedal extenders allow you to attach this set includes all standard 9/16 inch threaded pedals bicycle, BMX, cruiser, , folding, hybrid/comfort, mountain, downhill bikes, folding bike, tricycle, racing bike. : Not applicable to 1/2\" pedals and cranks, not recommended for use with carbon fiber cranks. REMOVE RIDING LIMITATIONS, RIDE LONGER - Installing bicycle pedal extenders can help you adjust your riding position and will allow cycling in a more natural position. They will work just as well on longer trips as well. Specification: Material: Chrome-molybdenum steel Color: Silver Size: length-32mm/1.3inch, diameter-18mm/0.7inch Applicable spindle specification: 9/16\" Package includes: 1 Pair of bicycle pedal extenders