GREAT FOR SPIN BIKES: The pedals are specially designed for spin bikes. Strong material: Die cast aluminum body, Extra heavy duty oversized CNC -Mo 9/16 inch Axle; riding: sealed bearings. Friendly reminder : Please do NOT use other pedals such as road or pedals on spin bikes. DUAL FUNCTION: Riding with clipless shoes: More efficient energy transfer to pedals or riding with casual shoes. PLATFORM: The aluminum body is 105 x 78mm relatively . It ensures more riding stability. FULLY COMPATIBLE: Compatible with all SPD pedals system. Means you can use SPD cleats on these pedals or use these cleats on SPD pedals. ADJUSTABLE 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 . Colour:Black Material:Aluminum alloy + steel + carbon plastic Size:160x130x100mm Package Contents: 1 pair * Spin Bike pedal Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.