Used these for some diy repairs on my house. Very durable and easily cut through the drywall allowing for a quick replacement. Great value. I'd recommend these for anyone doing some drywall work.

These came in a reusable and sturdy slide apart plastic case.Yes, the cutting edges are sharp. Made from High Speed Steel 65 these should last for quite some time.Machining is very good. No complaints.I have found that bits like these can be faster to use than a saw and cut shapes a saw can't even get close to.These will fit in most any electric drill and even most 'Dremel' type drills/grinders for precision work.Great for drywall but also useful for thin wood. I would suggest staying at or under 3/16" thickness for the wood.

I'm using these in my Ryobi rotozip and they work perfectly through drywall. The make a smaller dust mess compared to your regular wood blades so if you're doing just drywall and want less cleanup, these are for you.

I’ve used these 3/16-inch guide point cutting bits on a few drywall projects with my spiral saw, and they’ve performed consistently well. The HSS65 (M2) material feels durable, and the bits cut cleanly through drywall without chipping or wandering off track. The guide point design helps maintain control, especially around outlet boxes and corners, and I’ve had minimal dust blowout compared to other bits I’ve tried. They fit my rotary tool securely and didn’t loosen or slip during use. After cutting through several sheets, the bits still feel sharp, which is impressive for the price. If I had to nitpick, I’d say the storage packaging could be a bit sturdier, especially if you’re carrying them around to job sites. Overall, though, this 12-piece set is a great value for anyone doing drywall work, whether you’re a DIYer or working professionally.

I have a discount tool store brand spiral cutter but it is hard to find the bits/blades there, so I tried these. I did an entire large living room on a single blade. They feel like cutting through butter with a hot knife. The steel is a nice grade and the machining is precision work that shows in how well it's cutting. I did have to change the collet to the 1/4" one for these blades, and the blade is a 3/16" wide cut so make sure you account for that, & and 1" deep. My boxes fit just fine with that width bordering them. They are great blades.

These bits are a staple in any DIYer’s stash. I constantly misplace these and need replacements, so having a stash on hand is a major time saver.