fischer DUOPOWER (#8) 1/4" x 1 3/16" Universal Wall Anchor with Screws (50 Pcs)

Not same as said. Screws are super big and box came damaged.

Muy buena opción y excelente relación precio/calidad.

There are many types of wall anchors. Some like "Molly bolts" and "Toggle bolts" are quite secure in hollow walls, but useless in solid walls. Some like "Tapcon", "RedHead, and "Strike Anchors" only work in solid walls. These DuoPower plug anchors are light weight anchors that will function in both solid or hollow walls. The manufacturer says they adapt to almost any material, or material thickness. They are a great improvement over plastic anchors. I have occasionally had various problems over the years with nearly all anchor types. The Fischer DouPower anchors have so far, been very well behaved. Consult the instructions for the best results. You will also need the correct size drill bit, designed for the material you are installing the anchors into.

Anchors for masonry can be a crapshoot. The simple extruded plastic 'cross-sections' either don't fit tight in the hole (because you wallowed out mortar too much), or get chewed by the screw going in and don't hold. Simple hard plastic ones 'snap' between the front ring and the back half if you overbury the screw. These actually seem to work due to the bimaterial design. Have in place in drills in both hollow brick and mortar, and both seemed to hold well (light weight camera mount). My go-to when I don't have good anchors is to drill, inject JB weld and wait for it to cure, then re-drill a pilot. Use the JB-weld as a 'formed in place' anchor. Which is a pain with hollow brick, not to mention introduces a 24 hr delay cycle into your mounting task. These look like they'll save me that effort.

This fastener could be called universal. If inserted into a wall deeper than the anchor, it will expand and tighten to give maximum strength. If it is inserted into a wall shallower than the anchor, the back end will flare out, toggle-bolt like. (and without the tiresome pull and tighten of a toggle bolt) I gave its durability 4 stars, hoping that holds. Haven't had it in place long enough to know. One installation note: gently tap the anchor into place until its flush with the wall. Any loss of its wall seating will weaken the anchor.