Review on 🔩 ENERTWIST 246-Piece Drill Bit and Driver Set for Wood, Metal, Cement Drilling and Screw Driving – Full Combo Kit Assorted in Convenient Plastic Carrying Case (ET-DBA-246) by James Ohlrogge

Just got it in August and haven't used many of the drill bits. On my roof rack and removing it with the extension has it Worked great I'm pretty sure I drilled a few holes in the wood with no problem however I wanted to mount the shelves to a concrete wall (probably 30-40 year old concrete) and with the brackets needed to install I wanted that the holes are positioned fairly accurately. So I decided to pre-drill them with a small masonry bit and then redrill them with the bit that I use for my anchors. So I took the 5/32" bit from that set, put it in the hammer drill and tried to drill the first hole. I think it went about 1/4" or maybe 1/2" into the concrete before just buckling (see photo). 4" rock drill bits (NOT from this drill set) no problem. So my unscientific opinion is that this particular rock drill bit is crap. Analysis here, but . FYI and FWIW. Maybe other drill bits will serve me well, in which case I'm exaggerating here .OTOH if you provide masonry pieces they should be helpful!