Place the main connection pt. On a rated central attachment pt. On your Harness, then loop the working end over a suitable anchor pt., hooking it back on one of the rook's two other attachment points. Presto, a short climbing system! unlike single pt.-Of-attachment, slack-tending, pulley-based lanyards, the rook lanyard can be attached back onto itself much like the CE lanyard—but with a twist … actually without a twist! that's the beauty of it. The rook swivels!