(30 PCS) 1/4 "* 1-1/4" Slotted hex Head Concrete Screw Anchor Blue hex Head, Used for anchoring Masonry, Blocks, or Brick Plaster

Worked like a charm to mount a security camera onto a brick wall. Use a 5/32 drill bit for the pilot hole. You can then use the supplied socket bit, or use your own 1/4” socket, to install the screw. I did not try the included drill bit. Price was great compared to alternative options.

Good kit. Solved the problem of attaching a support post bracket to concrete. My contractor liked the fact that it had everything.

They did the job. I like that they came with the drill bit and driver bit. They were easy to use and drove into the concrete with very little effort. I may buy more of a larger size.

Good screws. Comes with nut driver and correct size drill bit. Only one screw broke during installation. Not a bad product.

they work and good quality

Had to use a slightly larger drill. The drill that came with the screws was too small. It would not allow the screws to go in the very hard concrete blocks and kept breaking the drill driver bits.

30 out of 30 driven perfectly into a cinderblock firewall. I had to back one or two out, then they just snugged back up. Be careful not to overdrive these during your install. They'll hold virtually anything up.

I needed to mount a new railing into the sidewalk instead of the porch steps. This comes with everything needed for mounting. Usually included drill bits aren't made to do the job they're supposed to. This one had no problems drilling into the concrete. I didn't have any problems with the screws. They went into the concrete snug and secure.