Should be the standard belay biner
Review by: Valarc, 2007-04-28
I bought the DMM Belay Master to use with an SBG II. The SBG has a solid stem, which makes it somewhat more prone to twisting around into weird orientations and crossloading the belay biner. With the belay master, this possibility is almost totally removed. Plus, the biner has a nice, wide and smooth radius, which makes it great for feeding ropes. It's a little on the heavy side, but the extra safety margin is more than worth it. As others have said, the ease of a visual check is also a bonus.
My only complaint is that the biner isn't a keylock. I switched from a BD Rocklock, which never snagged on anything, and I guess I was a bit spolied. If they made the belay master with a no-snag gate, I'd pick one up in a heartbeat. Still a very minor complaint, so I give it five stars. For safety alone, almost everyone should be using this carabiner when they belay.