They work fine but have a design flaw, to make them work properly you need to do some extra work that I've never dealt with before the same product made by another seller. If you use them straight away in drywall, they twist in place and cut a hole as you insert the screw into the dowel. "Break the seal" and loosen the screw - all so that the dowel opens up in the drywall rather than just snagging on the screw, making it impossible to use the quarter-inch hole you had for it have drilled. It's a fun patchwork - no. These anchors and screws work great after you follow the procedure above. I will use up this kit as I rarely need it, but next time I get a kit like this I will look for another supplier.
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