This 8 pack of screws is for the Aero Walkable Cleats. The 4x9.5mm screws would be equivalent to a 4x13 cleat screw for standard cleats and the longer 4x12mm would be equivalent to a 4x16 cleat screw for standard cleats.

It is great to have extra screws on hand to replace missing screws or screws with damaged heads. These screws are pre-Loctited and should be tightened to a maximum of 2.5Nm/22 inch-pounds. It also to re-check the torque after the first few rides. Get the Speedplay M4 Torque Wrench for the Cleat Fastening Screws to ensure correct installation Torque.