The Shimano BR-M7100/BL-M1700 SLX Bled Brake Lever/Post Mount Calliper use a short stroke Servo Wave mechanism, which allows for much quicker engagement as well as less free stroke for aggressive riding. A reach adjustment dial for free stroke and position adjustment allows for easy customization.  Shimano BR-M7100/BL-M1700 SLX Bled Brake Lever/Post Mount Calliper Features I-Spec-II Compatible Ice Technologies ceramic pistons for excellent heat dissipation Easy and clean bleeding thanks to a one way bleeding calliper and the funnel bleeding tool Hinged bar clamp for easy installation