Petzl Swivel S

Petzl Swivel S is a small ball-bearing swivel that lends itself well to shibari and rope suspension in general.  While swivels are great for spinning, they also serve the purpose of eliminating spring-twist in your lines, or even simple repositioning if you're in a crowded rope space.  

With Petzl's reputation in climbing and rescue, you can trust this swivel to perform well for years to come.