Black Diamond Light D

Cheap, strong, functional. Check, Check, and Check. If you're worried about weight, go for a wire biner. If you're worried about hooking you're rope or gear when unclipping, go for a keylock. If you're a cheapo like me but still want great functional gear, this is the way to go. Basic and solid. If I have to bail on something or leave gear behind too, much less painful to leave one or two of these behind (costs less than the post climb pitcher of brew). I've accumulated a number of random biners over time (some of which cost almost twice what this one does) and this basic one still seems to be one that gets used just as much if not more than the others.

These ain't the greatest thing since TP, but if you just need some good priced lightweight gear these will be in your bag. I have these and the standard Black Diamond D biners and for 3kN difference in capacity the weight of these makes up for everything. The "heavy duty" biners feel like double the weight in your hand. Don't get me wrong I do not use these when rapping, occasionally somewhere in my climbing setup I'll stick 1 or 2 for a backup. The term "light" makes me superstitious when I'm hanging a hundred feet over nothing, but nonetheless i keep 4 in my bag & 2 on my pack for general accessories.

For the Price this is a great biner to use for keeping your shoes together, putting your chalk bag on your haul loop, or even just keeping a couple with you incase you have to lower of a (cheap) pice of gear on a lead climb. They are a bit heavy but they last forever.

I use these biners on my runners that I use at the chains atop sport routes. I like that the biner is thicker to cater to the wear the rope puts on it when TR'ing. The gate is nice and wide which is nice. Looks pretty sharp as well. Definitely recommend this carabiner.

for being a light carabiner, it is very sturdy when you need it to be, i expected it to be more loose, but it is strong and high quality.
definitely worth the money even if i'm just going to use it to hold my chalk bag to my harness or shoes together.

I use these along with my bent gate BD Quicksilver biners to make quickdraws out of 4ft dynema slings for trad climbing. They are cheap and work great! The only thing they are lacking is color, but I can deal with that for this price!

This is your basic no frills solid biner. They're great for a budget, and they're very shiny and pretty. Fancy multicolored biners certainly have their place, like color coding your nuts. For anything else you'd need a non-locking biner for, why pay more?