Review on 🔧 Bosch Daredevil DSBE1012 12 Inch Extension: The Ultimate Power Tool Accessory by Edwin Cen

It's pretty good but you have to know what you're getting. It has a round hole where the drill goes. That's both good and bad. The good thing is that it is compatible with round drill bits. The bad thing is that you use 2 set screws to transfer the torque to the drill bit. I probably won't use this with round drill bits as they can only work with small sizes that fit the hole. Anything that small I break if I try to use it at 12 inches. And when I'm using such a small drill, I probably need some precision in everything I'm drilling, which I can't get when I'm 12 inches away. That being said, I've used it on a 7/8" spade bit with a 1/4" hex shank and it's held up. I made sure to put the set screws on the flat part of the drill shaft and tightened them as tight as I could without stripping them. Personally I would prefer a hex hole with a set screw to prevent the drill from backing out. as I will only be using this with spatula bits. There are some advantages to using set screws over locking in chuck extensions. First, the bit says it's pretty close to perfect expansion (collinear). That means it doesn't "flop" because the set screws don't have play like there is with the latches in cartridges. This can come in handy when getting a long distance horizontally, as it allows you to more accurately place the drill in the right spot. You can also align a few of them horizontally and it won't be a "rainbow". However, not best practice. Well you know how it is. The second advantage is that it has a smaller diameter than a bolt. This means if you need to drill through a piece of wood with a small bit, it will set you free, but a larger one won't. Imagine trying to drill a post and another post 16 inches apart. You need to get the drill and where it mates with the extension through the first post and into the gap between them. If you're drilling a 3/4" hole it doesn't matter, but if you need a smaller size, it can be coaxial or UTP, it can be useful. You can see the photos I've attached and this style is the smallest. This style was .553". The Bosch brand latch was .6085. Some brand I don't remember (and has no markings) was like .6055. The Irwin brand latch was . 7215 "With this extension you could drill a hole 9/16" where you will be with the largest hole need to drill about 3/4" hole. Does 3/16" matter in most cases? Maybe not often, but I think it's worth mentioning.