D-ring extension that allows the worker to use a self retracting lifeline or shock absorbing lanyard with to ensure they are safely connected. PRO accessories offer added flexibility. Attach a non-shock absorbing lanyard to snap hook in the length appropriate for your fall clearance. About Capital Safety, the world"s leading designer and manufacturer of height safety and fall protection equipment with 20 operating sites worldwide, is home of the DBI-SALA and PROTECTA brands. All of Capital Safety"s fall protection and rescue systems are backed by extensive training, knowledgeable technical assistance and professional customer service.