I thought to myself, "if they dont hold up, itll be worth it, theyre inexpensive.... lets give it a shot."They've held up for 3 months of constant use. I do remodeling. These are my #1 used tools. The fact i can hold 3 is even better than the 1 i used to be able to hold back with the old dewalt drills.... this holds 3.Theyre easy to get out, put in, and best of all, two things: they hold the bits extremely well! And lastly, the adhesion is still kickin! I set and store my tools on their sides almost always, hook up to the belt and the first ones are still in great shape, no change in quality from the first time i used them.VERY impressed and pleased with my purchase. I ABSOLUTELY recommend these to all of my contractor friends who inquire about them, conversation arises or when they ask about them when they see them and ask about their performance.BUY THIS FOR YOUR TOOL(s).