Look: The Blade Carbon Is The Product Of Lengthy Research By Look Engineers To Optimize All The Innovative Concepts Developed Within The Family Of Blade Pedals. The Result Is A Pedal That Is Even More Secure, Stable, Light & Powerful. Spindle: More Stability & Better Load Distribution Axle Play (Related To Internal Bearing Movement & Part Wear) Is Eliminated By A Wave Spring That Constantly Applies A Pre-Load That Does Not Deteriorate Over Time. When Pushing Hard On The Pedals, This System Can Completely Eliminate The Annoyances Caused By Any Play (Noise & Sensation Of Friction ). Look Axles Are Only Approved After A Rotational Test Of 2 Million Cycles At 100 Tr/min With A Load Of 90kg On The Center Of The Pedal & An Eccentric Rotation (Creating A Shock On Each Rotation). This Is Equivalent To A Mark Cavendish Sprint At 1700 Watts With 100 Revolutions/min For 333 Hours! Contact Surface Area: Maximum Power Transfer To Answer The Desires Of Some Of The Most Demanding Cyclists, Notably Competitors, The Pedal & Cleat System Must Allow Efficient Power Transfer Through A Broad & Rigid Contact Surface. Carbon Technology Using A Carbon Body Can Lighten The Pedal Weight & Provide An Additional Gain In Stiffness For Better Power Transfer.