Protects cleats during whole ride. Very light weightAdds traction as stops.Retains loose screwsComes off quickly for cleat maintenanceZ version lasts FOUR times longer Ride at atleast 4000 miles without any problem in or out as usual. No more hunting for covers at breaks. No need to take them off when break is over. Just put them on and forget them. These are not made for X series cleats. Each pack come with 2 cleat cover. Each cleat cover weigh about 0.04lbsColour: Black material: plasticApplication: For Zero / Light Action series of cleat Package include:2xBicycle pedalOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.