DMM Revolver Review

The DMM Revolver reduces rope drag friction by inserting a small metal pulley wheel into the basket. While it is advertised as being applicable for lead climbing or even top-roping anchors, we didn't feel like its weight and price were worth the impaired function for these uses. However, we highly recommend that guides, alpine climbers, and mountaineers who traverse glaciers pick up a couple for use with hauling and emergency systems, as they present a compact and very versatile alternative to a traditional pulley, with far better function than simply trying to haul through a carabiner alone.