The pack of two ThunderLok 3L Connector Retainer Clips from Sonnet is designed to be used for 3.28' Thunderbolt 3 active cables. When used with ThunderLok 3L-compatible products it secures the Thunderbolt cable from accidentally being unplugged.
Slides over a Thunderbolt 3 cable connector, and then secures it to the device by turning a thumbscrew
Doesn't attach to Thunderbolt connector, but remains on cable even when disconnected