DMM Nexus Swivel

The DMM Nexus swivel is a bearing swivel that lets the parts of a climbing or rigging system rotate freely, so ropes and lanyards do not twist up. Its larger attachment eye can take more than one connector, which makes it useful as a small hub.

Why add a swivel

Every time a climber spins on a single line or a rigged piece rotates on the way down, twist goes into the rope. Over a day it builds up into kinks and hockles that make devices and hitches run badly. A swivel between the rope and your saddle, or between the rigging line and the load, lets that rotation happen at the bearing instead.

The Nexus adds a larger attachment eye, so you can clip a second connector for a positioning lanyard, a pulley, or a tool line. Compare other models in our swivels.

In rigging, a swivel between the lowering line and a heavy piece lets the wood rotate as it comes down without spinning the rope into kinks. That keeps the line running clean through the block and the lowering device.

Inspection and use

Check that the swivel spins smoothly before each use, with no grinding, play, or flat spots. Look for cracks, sharp edges, and wear where connectors bear on the eyes. Retire it after a shock load or any sign of damage.

Load it only in the directions and configurations DMM approves, and make sure every connector on it is oriented correctly and closed. Life-support use must follow the maker's instructions and ANSI Z133 practice.