3/16 x 3-1/4" Hex Head Concrete Screw Anchor, for Anchoring to Masonry, Block or Brick (100Pcs)

The concrete screws are fine. The light plastic box broke during shipment but what ever. Drivers fault or the packing in the boubble wrap envolope more at fault. It's not a case made to last, more to just get it too you. The drill bit looked like the one you get with the name brand that has a flat spot on the end to fit into adapters. I tossed it with a pile of bits so I'm not sure if I used the one that came with it. More often I use a different size and / or SDS bit. IMO bitss that come in a box is just an extra in case you forgot to get one, lost, wore out, or broke you others. Who would expect a common hammer drill bit to last 100 holes? Not realistic. Anchoring in concrete no matter the type or brand is a skill. Years ago before cordless took over we would set Tapcons with a corded drill that had a keyed chuck and no clutch. There was about a millisecond between tight, twist your wrist, or broke.

Great deal on these concrete screws. Just as good as the name brand, Tapcons. I have these new sizes and colors. Would highly recommend these at a fraction of the cost of the name brand.

Work well and at a fraction of the cost when purchased at a store.

5 starts for the screws, 2 stars for the bit that shipped with it. The concrete bit I received was bent, so it wobbles during use, resulting in a hole that's too big for the screw. I can pull screws out of a solid concrete walls with three fingers. I had other (better) concrete bits in my limited tool box, including this size, so it wasn't a problem. However, other buyers might be dependent on the pictured and included bit. They'll be disappointed.

Good quality

If you’re looking for a budget-friendly masonry screw that gets the job done in concrete, block, or brick, the Bobibbi 3/16" x 1-1/4" hex head concrete screws are a surprisingly solid option for light-to-medium duty fastening.

Bought to add to my tooling collection.

The bit isn't very good, so I used a smaller better bit for a pilot hole, then used the one that came with the set to get the exact size needed. The next issue, which is the worst part, is the heads twist off really easy on these screws. Stay away from these. I will try another brand. *** UPDATE *** The seller did contact me and gave me a refund. Maybe I got a bad batch, who knows, but proceed with caution. I increased my rating for customer service.