Hercules harnesses are made tough. Anatomic shoulder harness matches perfectly with the Hercules Evo or Action Sit harnesses. Converting your sit harness into a full body harness with EN361 front and rear steel attachment points. Hardware not included with product. Use with 10mm Delta Quicklink, Maillon Rapide or Kong item 435296 for rear attachment to Sit harness and any locking oval carabiner for front attachment to Sit harness. Triple lock carabiner preferred.