When EachBuyer asked if we’d like to review some of their items, one that got my attention was this bicycle flashlight holder, because it appeared to be sturdier and more versatile than others:
First thing that came to mind when I took it out of the package was “man, it’s big!”. Here it is next to two Convoys:
The rubber square is used to cover the metal part of the clamp and provide a better grip.
One of the reasons I was interested in this flashlight holder is its ability to hold bigger diameter lights. My current tiny and weak holder can only really hold AA lights which are ~20mm in diameter, like Fenix E11:
Don’t mind the metal parts on the small holder, I jury rigged it together after one of the stock plastic ones broke. Back to the holder being reviewed… Note its size, this might be a con to some, but at the same time it’s a pro - the clamp jaws are very thick, and despite being made out of plastic look to be reasonably strong and durable.
Another advantage of this holder is that it’s not fixed to just one size lights - it’s adjustable. A 24mm Convoy S2+ is nowhere near it’s maximum capability, here’s what it looks like extended to the max:
I’d say it’s good to about 40mm. And the minimum is… Well, with some more and/or thicker rubber spacers you could even grip a AAA light. But let’s be realistic, ok? 
A 16.7mm L10 fits nice and tight:
Now to the other half. The bottom part of the holder isn’t as thick (mouse over to see fully tightened):
Notice the two rubber spacers, using them you can attach it to different size handlebars. In my case, the spot where I attach it widens to ~25mm, and the thick spacer is a perfect fit. For a smaller diameter handlebar you might have to use both spacers. Also, the rubber these spacers are made of (including the square one for securing a flashlight) doesn’t feel too grippy when you have it in hand. But it works, if you tighten it good it’ll hold well. Of course, some grippier stuff would be even better.
The inner diameter without rubber spacers is ~34mm in fully tightened and ~36mm in the loosest position.
How it looks with one rubber spacer at a time (mouse over to see the other one):
Metal parts:
If you really wanted to, you could replace them with longer counterparts.
There is a screw joining the two halves of the holder:
Undoing it lets you rotate it 90 degrees:
That concludes the review, at least for now. Because of my new job and crappy weather I haven’t had the chance to test it on the road yet. If I find any more pros or cons after I do, I’ll update this review.
Overall I’m really happy with this holder. Yes, it’s big, and the rubber spacers aren’t the grippiest ever, but they work and otherwise the holder is very good. The clamp is thick and feels like it will hold, it accepts a wide range of flashlights, can be rotated 90 degrees and attached to different diameter handelbars.
I already destroyed the package!