Kundenbewertungen für VEVOR Kernbohrer Bohrkrone φ 38 mm 241 mm Bohrtiefe, M16 Innengewinde, Trocken-Diamantkernbohrer Kernlochbohrer mit 3 Adaptern Pilotbohrer Sechskantschlüssel für Stahlbeton Ziegel Mauerwerk

This core bit works well and is a great value. As others have said, the center drill is too short but that only affects starting the hole. Once started, the center drill is not necessary. I drilled through a 10" concrete wall, 2" at a time, using a chisel periodically to break off and remove the plug to keep the bit from binding. Definitely use a corded drill.

I bought the 6" drill bit because the HVAC and cement guys told me they didn't have a way to drill through my storm shelter to get air flow. I bought this without any idea what I was doing, and I was pleasantly surprised. It took some time, but I drilled a perfect hole through 10" of concrete with nothing but a Milwaukee hammer drill (which was just as impressive). I don't think they're made to go through rebar, but they eventually went though a couple rods that were in the way as well. I wouldn't be scared to use these core bits on any project.

It’s an amazing package for the price. This comes with drill stems for industrial drills and home drills alike. The center bit can be replaced with a hardened concrete drill and this cuts well into the older hardened concrete to make bolt down holes for anchoring heavy vibration equipment. If you’re doing a job with some serious concrete to get thru this is a great bit. I used it to drill multiple 4.5” deep holes to anchor the weight train for an elevator and it worked perfectly.

Buen producto, ayuda a resolver situaciones y proyectos.

Fast shipping and worked great.

Got this to put a dryer vent through my concrete foundation so I didn't have to rent a core drill. Worked great with my dewalt sds plus hammer drill. Took somewhere betweet 5-10 mins to go through the wall. For the price you can't beat it. Would reccomend.

GREAT VALUE WORKS WELL

Die Bohrerspitze ist scharf und langlebig, sie bohrt durch harte Materialien mühelos, die Verarbeitung ist hochwertig und verschleißfest.

Uitstekende help om gates te boren

钻头就不用多说什么了。根几百块买的钻头效果一样。用的时候记得加水尽量不要干钻。我准备陆续把这些钻头都买齐。以后干活方便好多 评论一定要一百个字以上折磨人啊。。。。。。…………………….……………………………………………………………………