Each set of Lock Cores come with two keys. Our lock cores are sold separately on roof top racks (allows keying the same) and work with all RockyMounts' products. Each lock core is coded so you can easily have a matching set for easy access to your equipment now and in the future. Note: If you want a specific core # to match your current locks, type the four digit code (ex. E144) in the "Comments" field and checkout and we will match them.