for Material: steel resin Size: 69.8mm long, 60mm wide, 7.2mm high ​ Package list: a pair of locking pieces 8 screws Protective sleeve Air lock: for Speedplay's latest Zero walkable lock kit, with a simple and convenient structural design, provides high-performance and outstanding performance for mountain bikes and riders. The locking method of the Walkable system is the same as other styles, but an additional rubber protective cover is added outside the lock plate to provide protection at any time. The golf ball protective cover can fully demonstrate the aerodynamic performance of subtle details! Applicable to WAHOO Speedplay lock pedal SPEEDPLAY walkable road lock, The easy to operate spring structure makes it easy to lock and unlock, The uneven design and rubber material of the outer protection can provide better riding aerodynamic effect and walking friction, Adjust the micro position of the lock piece left and right, with 6mm