Blair 11090 Rotobroach Cutter Kit Hole Saw Kit

These bits are awesome! I have drilled at least 15 holes with the 7/16 bit through 3/16 steel and it is still very sharp and cuts perfect holes! Yeah, they're expensive, but I would say they're worth it. I am now considering getting the larger set!

The only tool to use when drill holes through sheet metal . clean cut holes, and quick every time

Advantages: 1) As long as you dimple the surface with a punch, the centering piece eliminates bit skating, in contrast to a conventional HSS drill bit of equal size. 2) The hole cutting bits are very efficient, and significantly reduce the time it takes to penetrate the steel, in contrast to a conventional HSS drill bit. 3) As advertised, it does not leave rough burrs. Disadvantages: 1) It is sometimes necessary to use a vice grip to release the hole cutting bit from the washer / arbor base after use. Reason for purchase: To efficiently cut holes in 1/8" thick steel plate. It efficiently did the job I needed it to.

I bought for stock to replace the ones in my kit when they eventually wear out. I have only used them for a few months before winter hit but they worked well and better then Harbor Freight tool that is a double sided saw hole design. Which I could not unscrew to flip the head over but the Blair's don't jam. Mike Solberg would say "you buy junk you ride junk". Blair lube works great too.

These cutters are fantastic. I have the large hole cutter set as well and they are worth the extra cost. Just completed installing a gooseneck trailer hitch on a truck and the truck owners took pictures of the set so they could buy one! Follow the simple instructions and they will last a long time.

We get about 4 times more holes with these than any other bits we have tried. We use them daily and the set usually lasts us about 6 months.

Cuts nice clean holes in a variety of materials. Replacement cutters are a tad pricey but with proper use they last a fairly long time. Blair makes good products!

What a great invention! I just wish they had more sizes in this range. Sometimes I need in between sizes of the ones they offer. It cuts perfect holes that only need mild touch up in .125 aluminum, which is what I use it mostly for.

The kit was good and the cutters worked well.I was cutting holes in 1/4 " angle and there was no problem Had a problem the centre pin in the arbor getting jambed, so I contacted the manufacturer and they were great. They shipped a replacement the next day, for free. I also used the recommended cutting compound which worked well. The only issued is after using the cutter numerous time it was a challenge to unscrew the cutter from the threaded arbor. Overall quite happy with this kit, nice clean holes and cuts quickly.