In the past I have made hundreds of holes with the core drill. I purchased the crown with a diameter of 160 mm and made 3 holes in a wall with concrete blocks, I had truly unexpected results considering the purchase price. Nothing to envy of renowned brands, truly an excellent product.

Diamond drill ordered looks good and good price top

Thanks

Hello good carote not to say very good because for the moment I have only made 5 carote diameter 160 in the masonry I took the set before starting I had 9 millimeters of diamond in the 5th hole I had 8 .5 millimeters! So quality price good product! You have to see over time (maybe with the newly arrived carrots you take a steel log and this can damage your diamond teeth from your carote! So by habit, moisten the gold of your omens well! Advice from a carrot expert who has done dozens of corings in concrete and who has also shot several cores in the past!😛 best regards Mira Juan Carlos

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The only problem is that the tip to connect the bit to the drill is not the right one, the recommendation on the site was not the right one. I should have looked better, the associated purchase proposal was not fair