Round Handle Hole Saw Cutter Set, 350mm SDS Plus Shank Concrete Wall Drill Bit with 30/40/50 mm Expansion, Durable and Stable, for Install Air Conditioners, Hoods, or washing machines Machines Etc.

Worked as it should. After using the middle size I found the retaining screw contacted to outside of hole drilled and wore its corners off. The rod stayed stuck in and required a vice and a “persuader” to remove but having used copper grease before reassembling the second time was fine. Good deal

This set is okay for the money, but don't expect miracles.

These made light work of drilling through some reinforced concrete walls, no signs of wear as of yet. happy with the purchase and quality

Good quality excellent value for money I only used the 50mm which cut through my brick & block wall easily.Recommended.

Had to drill a hole through some rock and it works very well.HAPPY!!

Did the job brilliantly cutting through 4 inches of concrete, keep water flowing to cool. Only downside is the drill securing screw is constantly coming loose and had to stop frequently to tighten again. Also when finished I couldn’t unscrew the cutting bit and will probably need heat to separate.

Like a lot of other reviews mention, the screw holding the drill bit in place works loose and comes out, I needed to drill two holes for waste pipes, first one took around 30 minutes, remembering what happened with the screw on the first attempt, I wrapped a bit of tape around to stop it flying off, sadly, drilling the second hole was a different experience, it took over an hour to do the second one, the teeth on the cutter had gone blunt, for the price, it did its job, I doubt it would do a 3rd hole.

Nice compact bit of kit, each item has its own plastic container, value for money!