Diamond Core Drill Bit,BRSCHNITT 1 3/8 Inch Laser Welded Diamond Hole Saw with 5/8-11 Thread for Granite Marble Solid Block Stone Reinforced Concrete,Dry or Wet Drilling (35mm)

I am not a professional by any means. I am just a cheap person who did not want to pay someone to drill extra holes in my countertops, and I own a grinder. The drill bit does all the work for you. I bought two sizes, and both performed wonderful. It is very easy to use and leaves a clean hole on dry or wet surfaces. Please make sure to pull out the cut piece after every use, or else the bit will not drill properly and will travel on you. It being the first for me, the second hole was not as clean because I thought the bit being so deep I could drill about three holes before pulling the cut piece off, big no-no. once I figures that out, all the holes but the second one were clean cuts with not jig. Make sure to start the hole in a slit angle until you make a small groove, than you can start to straighten up as your drill to avoid skipping all over your countertops. Fyi its new construction and i still need to clean up and finish touches , but besides 2 hole on the master and 1 hole on the hall restroom being done i drilled all the other holes myself. I did not have pictures of the other restroom or laundry room, but i drill quit a bit holes and it held sharp. Very great product. FYI I know the kitchen sink looks overkill but that's a 48" long sink not a regular size, and yes it still needs cleaning.

Only drilled 3 holes in brick so far. 1 practice and 2 in my house. The practice hole was worth it. The holes are right where I wanted them. The saw worked great and does not seem to have degraded at all. The grit high on the sides are really handy for enlarging the hole a bit to fit the OD of the electrical elbows. It spins smooth and the cores fall out easily. Very happy and won't hesitate to purchase other sizes as needed.

Clean cut, would suggest using water to keep the bit cool

Súper recomendada nada de envidiarle a los demás

Bueno

Works Well, though tbh we only get about 15 holes per bit, for the price I dont mind.

Does great were or dry

Used it to drill a hole in a quartz countertop for a filter tap. Worked better than I thought it would, cut through like it was butter. Fit well into my drill using a drill bit adapter.

I've tried several hole saws from varying brands and this one has the best performance for the price. There are some cheaper ones on Amazon that work, but I was using this one for about 10-12 1&1/4 inch thick granite and quartz tops. This bit has excellent bite and decent longevity.

Low quality product. Not build precisely. Vibrates while drilling

Unlike other so-called diamond hole saws on Amazon this one actually does the job and does it well.

That's okay for the price

Muy buen producto, calidad y precio. Muy recomendable