Why is this the best drill holster? It's a pretty easy answer actually. This is just the right size to where it can accommodate any size drill or impact driver. Secondly, it's ambidextrous so either side it'll work great. I use the smaller pocket for fasteners, wire nuts and etc. it's also strong enough to hook my drill on that pocket as well and it stays secure.

This holster is good when doing light tasks where you need to hold some screws or bits, and impact/drill. Too big for 12v tools. It's the perfect size for the18v drill and a little big for the 18v impact (fits and won't fall).

It's stiff and sturdy takes a while to break in. Fits most tool belts, and can be used for left and right hand mounting. Over all it's good when you want to maximize the use of a holster to have all bits in one area in stead of another pouch somewhere else in anothe bag, pouch, or pocket.

I love these modular tool attachments. A lot of times i don't want to lose myself down with a full size tool belt, but when you are working at the top of a ladder or other inaccessible place having a place to store an retrieve tools. Sometimes i will attach the hand tool kit, other times this kit if i need my impact driver.
I will confess one problem with these, if your belt or pants are loose...this will tend to "expose" those things you like to keep covered. These will never take the place of my full tool belt, but sometimes you don't need a full tool belt. Moreover, the modular system can provide efficiency and flexibility...and a several fewer pounds to carry around.
One other important point is the attachment clip can be placed on your belt in the morning, you can use a tool belt without interference. When the situation call for one of the tough built holsters, you can easily attach it. Further, all The tough built line uses the same belt attachment.

I now have about 6 different configurations that I keep ready for the type of handyman job I'm working at that time. They've put thought into how these are laid out (1 exception, EVERYTHING should have a tape measure clip, maybe 2, lol) I keep 2 belts handy again depending on what I'm doing I'll attach one or more of the pouches and go. I can remove and easily hang them next to my workspace if needed which is very convenient to be able to reduce the weight I'm carrying all the time. The price for these is very reasonable compared to bigger name brands that are less versatile these are a steal. I have extra clips on my toolboxes and strategically placed in my work trailer for storing or added convenience while working.
Highly recommend this entire line of tool pouches

Good retention, even without the strap buckled. Material is thick, rigid, and seems well made. Holds on well to all the different drills I've tried in it. My makita impact sits a little funny because of the lack of a "nose" to guide it down into the holster, but the holster still grips it well. The ambidextrous nature of the holster is nice too. Not exactly low profile, but the features that make it bulky are useful so I wouldn't consider that a fault.