With the treadmill accessory kit, you can lengthen the life of your treadmill and get the most out of your money and your workouts. Your treadmill will run quieter, longer and more efficient with just a few simple steps. The treadmill accessory kit comes with an eight-oz. bottle of heavy-duty treadmill belt cleaner, one white towel, one surge protector, three different keys that match any treadmill and one 0.5-oz. bag of treadbelt lubrication to extend your treadmill's life.