DMM Ceros Screwgate

This biner is really well made and operates smoothly. Most importantly it completely eliminates the possibility of cross loading a grigri. I have tested it in every possible orientations and it always ends up loaded on the major axis. The captive bar works well, it is tight and the belay loop won't come out. Also opening toward the palm makes it easier to operate with one hand. The material and finish is top notch. I will be adding more DMMs to my rack from now on.

Works great with the Edelrid Mega Jul, Petzl grigri 2, grigri plus, BD ATC guide, Wild Country Revo and even a Munter Hitch. Works okay with Mamoot Smart Alpine, but is slightly narrow and requires attention from the belayer.Screwgate closes nicely and quickly, unlike Metolius. Rope end is wide enough and with round profile so that a munter hitch works well, even with 10mm stiff rope. Works well on rappell. Anti-cross load feature out performs the similar features on both Black Diamond and Edelrid belay carabiners.Probably the best belay Carabiner I have tried and I've tried it huge number. The Grivel Clepsydra is the only other that compares, but most people don't like the twin gate on the Grivel.

Really like this carabiner. Works perfect my Grigri. The carabiner doesn’t rotate, the Grigri stays in place. Make belaying super easy. Well made.

While this works great with a grigri it also works great to safely secure hillsounds or microspikes to my pack.

Bought this to prevent my GriGri from crossloading my normal caribiners. Does the job. Build quality is fantastic, screw lock and gate both feel solid.

Prevents cross loading of a Gri-Gri which is nice but I would not use it on any multi-pitch outdoor stuff due to its weight and how it doesn't hang on a gear loop as nicely as a typical carabiner. The extra step to remove it increases the likelihood you would drop it.

I use this on my harness for belaying and it works great preventing any rotation. I wanted the screw version for safety and maintenance, but I now wish I would have gone with the ease of auto-locker.

A more thought out version of the Black Diamond version, the Ceros smoothly reduces the ability of my belay device from starting to cross load. Another excellent product from DMM.