THIS ARM IS FOR A STANDARD 5/8" (15.9mm) COTTERED AXLE. THESE WERE USED ON SO MANY TRADITIONAL BIKES.
Bicycle Bike Alloy Cotterless Left Hand 170mm Crank Pedal Arm Diamond Taper
PROWHEEL Left Hand Cotterless Crank Arm 152mm Mountain Hybrid Bike Chrome
SR SUNTOUR Left Hand Pedal/ CRANK Dimond Taper Arm XCR6 175mm Black
Bicycle 152/170/175mm Left Hand Crank Arm Square/Diamond/Spline Hollow Crank MTB
Left Hand Crank Arm Mountain Bike 152/170/175mm Square Crank Diamond/Spline MTB
SunRace Bicycle Left Hand Crank Arm 175mm MTB Bike Crank Arm Black Diamond