Set of two brake pads May be used on front or rear brake calipers 45 mm of rim-gripping brake pad Our replacement 45 mm brake pads for the Mongoose Expo Freestyle scooter comes as a matching set of two pads These may be used on both the front brake caliper or the rear 30 Day Warranty Description Our replacement 45 mm brake pads for the Mongoose Expo Freestyle scooter comes as a matching set of two pads. These may be used on both the front brake caliper or the rear. We also offer a compatible aftermarket set of two 38 mm Brake Pads for the Mongoose Expo Freestyle Scooter that will work quite well.