The Toss'R Self Retracting Lanyards (SRL's) are designed to arrest a fall when a worker falls. They have a centrifugal braking design that locks up when the webbing is deployed more than 4.5 per second. It connects to the rear harness D-Ring for fall arrest or the side D-Ring for fall restraint. Includes a built-in energy absorber and a captive aluminum twist lock carabiner. The service life is between 1-5 years depending on the environment and type of use (see Table 1.0 in instruction Manual). They are disposable and cannot be rebuilt or serviced. All Toss'R SRL's include a steel twist lock carabiner to connect to your anchor point.