10PCS Black Masonry Drill Bits Set - Tungsten Carbide Tipped for Concrete, Brick, Tile, Glass, Plastic & Wood (5-12mm) | Perfect for DIY Home Projects, Construction Work & Professional Use

Needed to drill through concrete… these drilled through concrete.Did what I needed to doWorking perfectI bought this so I could install something on a stucco wall. The first hole I tried to drill, the bit started, then just bent. I tried another hole in a different place with a 2nd bit & it started bending too! Really disappointing.The durability was fine and it was a good value for the money. Just what I needed.I was trying to drill 2 holes on a concrete slab and I couldn’t do it, the drill bits will wear out almost immediately. Don’t waste your money very low quality.Tried drilling through a 1/2 thick concrete block and didn’t even get a quarter of the way though and the bit broke, went to another bit the same size and it broke as soon as it hit concrete. These bits didn’t even break through brick before the shank broke. The whole bit from top to bottom is aluminum.This bit will last about 15 seconds. Another waste of time and money. I never write any comments on anything but this one I just had to do. Too bad they don't have a half star in there.The bit was purchased to install 12 push-to-open latches, but after drilling five holes the bit was too thin and the latches couldn't be inserted. Very poor qualityJust wish they came with a caseAs a successful renovation business owner, my hubby probably knows everything about drill bits, or as they say, he could fill a book with this knowledge. )))He was using the set over the last couple of months.Considering the price benefit ratio, the bits' durability and performance are fairly good for occasional DIY projects.I doubt that professionals will show any interest in this product.Used these so far in wood cabinetry to drill holes for an over the range microwave installation and in bricks to install a house sign and a hose. They drill through everything with ease and no signs of them breaking or damaging. Awesome drill bits thqr have served me well so far.Good assortment of sizes, I used it to drill through some hard maple wood for a project and it was plenty sharp. Also used it to drill some holes in a cinder block and no problem at all. Stayed sharp even after using it to drill a few dozen holes.