BikeFit Pedal Spacers/Pedal Extenders for 9/16 inch Crank Set / 1.5 mm to 20mm Left Pedal Spacer, 20mm 304 stainless steel, no corrosion Used with knees that track outside the pedal by adding length to the pedal axle Not recommended for use with carbon cranks Designed to move the foot out and away from the crank arm to provide more foot clearance Stand up Take a few steps Stop and stand in a comfortable position with your legs side-by-side