300 Qty 1/4" x 1-3/4" Hex Head Concrete Screws Anchor with Drill Bits Blue Slotted Hex Screws for Anchor Masonry, Block, Brick, Cement, Stucco, Diamond Point and Wood Fastening

They're just as needed, for tapkonz

Should’ve been an inch and a quarter received inch and 3/4 but they look the same quality as tap cons

Great concrete anchors. 3 times cheaper than the local stores, exact same ones.

Buen tornillo para el concreto

The drill bits that came with the screws are too short. The hole is supposed to be 1/4 inch deeper than the screw goes, and the bits are the same length as the screws. You have to put 1-1.5" of the bit into the screwdriver for it to grab, right? Hmmm... Off to the hardware store...

My inclination is to use an anchor when putting screws in concrete. It took 24 seconds to drill a one-inch hole and then another 44 seconds to drive the screw in. I think I;d be quicker with the screwing once I got the 20V portable drill at the right setting. The 5/16" nut driver fitted, but it took a while to find a setting where the drive did not slip. Probably easily less than a minute each of you had two drills available to avoid swapping the bit each time. Good time-saving concrete anchor screw.

Good concrete screws. Just like the name brands. Includes 2 concrete bits. Hex head means a strong grip when fastening these screws.

Head of screw strips and impossible to fully drive into concrete