It is Strong™ Locking Rod & Padlock Set for SM-F/T-L Mounts - 5 Pack. Let's be honest here. If someone really wants to steal a TV and is dedicated enough, most likely it's going to happen. However, thieves are more inclined to go for the easy score when time is of the essence. That's where the Strong™ SM-LOCKSET-L fits in. It's a steel rod and keyed lock set for the SM-F-L and SM-T-L mounts to help deter thefts, and is designed to be for an easy install with the low profile nature. If you install a lot of mounts, especially in commercial applications, this solution is key to keep prying hands away.