HANS III 20L SFI Device - Large, Quick ClickThe Hans III Device features a specially engineered hollow collar that reduces device weight substantially. The SFI 38. 1 rated model includes Quick Click style connectors that allow for quick removal of the device for easier entry and exit in even the smallest, tightest race cars. By engineering specific reinforcements into the design, the exceptionally strong structure provides the same level of safety as every other Hans Device, but allows for the