is biggest-brother to every other smaller weight pairing of like-kind. Obvious benefits are the heavier gauge fittings. This equates to heavier gauge screws or coach-bolts, and therefore a greater resistance-to-load ratio per screw. There are disadvantages due to the larger size of said fittings - the object will inevitably sit away from the wall due to the excessive bulk of fittings (unless the object has a recess at its rear whereby the fittings can be hidden). 7. Security systems A term that perhaps is in need of clarification. Security fittings are, by nature, only as strong as the material that they have been fastened to. But if in the case of many buildings, the wall is hollow, then the system for all its merits is only as secure as the strength of the wall and its wall plug. Which in most cases is not very resilient. With this in mind...'Deterrent Systems' might be a more appropriate term. If someone really wants that picture then ripping it from its anchors takes only several seconds, a couple of good yanks and voila, they're off with it. If there truly was a security hanger that could actually do the job of preventing villains from succeeding in art theft, then we wouldn't see security guards at art museums now would we. 7a. 'T-Screw' with Slotplate The most commonly used security system currently on the market basically consists of two slot fittings at the top of the artwork and one or two 'T' screws at