Petzl Sm'D 2-way auto lock carabiner

Shibari Supply carries this version of the Petzl Sm'D carabiner for a specific use.  We've noticed that many rope spaces and dungeons have hanging chains (aka chain drops) as a way to connect to a hard point for suspension.  The problem is different spaces may use different size chains.  The Petzl Sm'D is narrow enough to easily clip into most chain drops while providing the strength necessary with a 23kn rating.  We prefer this simple twist two-way auto lock for set-and-forget attachment of your rigging gear.  Why this color? Because Petz'l doesn't offer it with this lock in black!