Self-locking plate, the Slyde (even thought it was not designed to be an "energy dissipator") may also be used to reduce the force of impact of a fall, by acting as a shock absorber.
Figure '8' descender with wings for creating a locking knot. Perfect for belaying the first climber with double ropes, and rescue rigging with large diameter static ropes. Popular as a rigging attachment point for Aerial Silks