Original Trek MT 200/220 Youths Mountain Bike Crank Arms Came from an MT 200 girls Trek mountain bike with 24" tires 32 tooth sprocket, Square tapered hole Adjustable pedal lengths of either 5" or 6" Decals on side of arms are wore but read Dialed 9/16" threaded pedal holes Please look at picture's close as this is the item you will receive Ask questions before buying as all sales are final with no returns Thanks for looking