Spyder Hex 8 1/4-in x 7-1/8-in HSS Hole Saw Pilot Bit

Great bits and hole saws.

I love the way they designed the bits to allow the quick release hole saw holder to slide off the bit by a push of a button. Very nice !

Junk

I bought the 14 pc kit several months ago. The first high speed bit latest for about a dozen holes, maybe more. The bit broke off in the shank. I bought a replacement and the first time I used it (drilling through vinyl siding and 3/8" OSB), again the drill snapped off inside the shank before I got half way through the material. I don't mind spending high prices for tools, but when I do, I expect high quality. I recommend considering other brands.

Next time I’ll pick a different brand/type..

Bit snaps easily and it makes the diameters that use that useless, I suggest either having spares on hand or looking elsewhere.

Clearly Juan don't know how to use this

I'm a mason and everyday for last 3 years I have used this setup with the 2inch hole saw for drilling through block for a pvc sump pump discharge. I use the 4 inch as well just not as often. The bits rarely break. If you use the wood bit with concrete which looks almost identical the tip will break. So the guy who commented ain't too bright. I drill an average of 20 holes before the carbide holesaw starts to break and that's mostly due to abusing it running at too high of speed. When drilling t...

Bit separates from of shaft during wood drilling

Bought the kit with a concrete/bi-metal hole saws; the standard bit separated from the shaft during drilling through a wall with siding, foam insulation board and sheathing, the first time I used it. I had to buy a second bit. The bit is round and pressed in only about 3/8 of an inch, separated when it heated up during drilling. They should have cut a flat side and pressed it in farther into the shaft. The kit itself works as advertised.