GREAT FOR Indoor BIKES: The pedals are specially designed for Indoor bikes. Strong material: dia-cast aluminum body, extra heavy duty oversized CNC Cr-Mo 9/16" Axle; Smooth riding: sealed bearings. Friendly reminder : Please do NOT use other pedals such as road or MTB pedals on Indoor bikes.<br/>DUAL FUNCTION: Riding with Look Delta road cleats style shoes or Shimano SPD MTB type shoes. This is good option to replace Peloton pedals which is compatible with Look Delta only. Compatible with Look Delta (1 set 9 degree) & Shimano SPD (1 set) cleats are included in the package.<br/>FULLY COMPATIBLE: Compatible with all Shimano SPD MTB & Look Delta pedals system. Means you can use Shimano SPD & Look Delta cleats on these pedals or use these cleats on Shimano SPD & Look Delta pedals.<br/>DJUSTABLE TENSION: The cleats tension could be adjusted by the screw on the side of the pedal. It allows riders to achieve perfect clip in and out feelings. Weight: 578g=1.27lbs /pr. Size: 87 x 90 mm.<br/>