
I'm finally tired of losing random Allen keys over the years. They're made of durable material and I'm not really worried about them breaking under stress. I will say that they came out of the box quite tight and I had to make some adjustments to the compression joints on the handles, but other than that they are great. If you are looking for a reliable system for your security and a system that is easy to find, then this is what you want to buy. If you're looking for something that will provide the torque needed to remove those old rusty parts, this isn't for you. Instead, look for a system with handles specifically designed for heavy-duty work; It's more for light to medium-duty work.