As good or better than the ones you pay extra for at the big orange store. I use drum bolts daily and only recently discovered them. For about 20% of the cost they are equally well constructed. In my opinion, they are actually in a slightly better position. Round nut, single band and quality materials make it an easy task. I've noticed that sometimes the strap doesn't come off cleanly, but having a pair of flat cutters handy fixes that quickly. I hang up TV regularly and sometimes. You don't have enough bolt access for all the studs. They're great for extra support, but please don't think about hanging your TV just from them. The small TV pictured is attached using two standard wood screws and two heavy duty Simpson anchors.
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