Biner Plastic Dual Carabiner #4 Black

Nothing much to say. I bought this just to fullfil the amount for free delivery.

This is very useful it works smoothly.

Ok

Me parece muy versátil ya que normalmente lo uso como llavero, pero también lo use para bajar y subir cosas, no muy pesadas, al techo de m i casa usándolo de intermediario entre la cuerda y la cubeta

Sometimes one finds a small gadget that may seem unworthy of reviewing, but it's so handy that it's worth coming back for more. This Nite Ize Double Gated Carabiner is just such a product. First discovered these in a camera store a few years ago, and they looked interesting enough to make get my first ones. I'm glad that I did, as they were my first, and since then I've purchased a number of them for various purposes, including here on Amazon when I saw them appear here. Since then I've bought a number of them, and have used these gadgets to attach a tripod to my photo backpack for quick release, for attaching items to a rack on the back of my mountain bike, as a replacement for the almost useless carabiner on water bottle lids, and as a handy belt-loop clip for temporary devices. The uses for these are only limited to your imagination. The S-Biner is a small, handy thing that is a sort of double-ended carabiner, constructed from "durable glass-filled nylon with 202 Stainless Steel wire gates" according to the manufacturer, and there are stainless steel versions, too. The hooks are slim and handy enough to use to attach to a variety of items, and if you don't like the black version, they make them in colors as well. The steel ones are constructed from "2Cr13 Stainless steel for the body and 202 Stainless steel for the wire gates" according to the manufacturer, and they're available in black, stainless or "spectrum" (multicolored) finish. It's hard to figure out what size might meet your needs, as I found out when trying to ordering a couple of these. As a result I went to the manufacturer's site and pulled down what is available, and will try to summarize here: Nylon (plastic) versions: * Size #0 , plastic - dimensions: 1.18" x .49" x .14", no weight rating. * Size #2 , plastic - dimensions: 2" x 1" x .3" weight rating: 10 lb. * Size #4 , plastic - dimensions: 3.5" x 1.5" x .3" weight rating: 25 lb. Stainless steel versions: * Size #1 - dimensions: 1.56" x .56" weight rating: 5 lb. * Size #2 - dimensions: 2" x .88" weight rating: 10 lb. * Size #3 - dimensions: 2.63" x 1.13" weight rating: 25 lb. * Size #4 - dimensions: 3.5" x 1.5" weight rating: 75 lb. * Size #5 - dimensions: 4.38" x 1.94" weight rating: 100 lb. They also offer a handy S-Biner Ahhh Carabiner Clip Bottle Opener , which is a double-ended gadget list like the regular S-biner gadgets except that it has a built-in bottle opener, and from first hand experience, it's good. There are a number of other innovative versions and styles, including a handy Nite Ize KeyRack Key Holder with S-Biners , with a stainless steel carabiner clip holding six different colored plastic S-Biners, and sized to hold 6 separate keys. Have that one in my camera bag most of the time. The packages warns that none of these, plastic or stainless, should be use for climbing or where "disengagement could result in bodily injury or property damage." Enough on that, but just let common sense prevail. On a personal note, just be sure that the gate spring properly engaged with the hook and you should have no problems. I've had no failures on mine. You could probably just use a garden-variety cheap aluminum carabiner as a substitute for these, but if you value your gear, these are well worth a look. Might suggest that if you're going to use them where they will result in metal-to-metal contact, the plastic versions might be a better choice. Have use both the #2 and #4 sizes with cycling and for photo use as noted above and so far they have held up admirably. After having bought a number of these both for personal use and as gifts for those who already seem to have everything, can only become one of the handiest gadgets that I've owned. Am calling the S-Biner a 5-star handy gadget... and I've just ordered more.