1?��Aluminum Material: Made of high quality aluminum alloy material with high strength and wear resistance, having good performance for long service life. 2?��Non Slip Design: The use of nail type non slip nail design for a strong grip which will make your feet stay with a stabler state, so that your outdoor cycling will be safer. 3?��Main Function: Has the function to make lock step pedal change into flatten step pedal after installation within short time, providing a satisfying using experience. 4?��Application Range: Has the feature of porous design, suitable for SPD road bike system, for SPD mountain bike system and for KEO road bike system, suitable for daily use. 5?��No Burden: Aluminum material makes these pedal platform adapters have a light weight, will not increase the burden or cause additional energy waste.