Kundeanmeldelser for VEVOR kjernebor, 102 mm diameter, 356 mm boredybde, 1-1/4 tomme-7 innvendige gjenger, høypresisjons sveiseteknologi, våt diamantkjernebor for armert betong, røde murstein og murverk

Zentrierbohrer zu kurz, daher sinnfrei. Mußte einen anderen Bohrer benutzen. Lieferungzeit zu lange, Verpackung mangelhaft, Tracking undurchsichtig Die Serviceabteilung gibt vorgefertigte Standard Antworten, nutzlos. Die Bohrleistung ist gut

The center pilot bit is too short and does not protrude out the end of the hole saw. I did try and pre-drill the pilot hole without the hole saw and found the hex screw would not stay tight in the arbor, so the pilot bit is basically useless. While the kit comes with 3 adapters, the threads are very loose fitting and the SDS Plus in particular only had a small portion of the threads engage inside the hole saw. I'm surprised it didn't strip out. It seems like this "KIT" is really just a bunch of random pieces they threw together and are not specifically made to fit together. While the hole saw did seem to cut through the masonry block fairly well at first it became less effective near the end of the 8" deep hole. If you only need this item one time, don't need the pilot drill and are sure there is no rebar then the price is good for a DIY'er. Just don't expect to put this tool in your kit and use it reliably in the future.