The ASAP LOC is designed to arrest falls on single kernmantle construction ropes of 10-13mm diameter. Works on vertical or inclined rope and locks onto the rope if descent is too fast or if it shock loaded. This device will also lock if grabbed by the user.?Device can be locked onto the rope to hold the worker in position.?Energy absorber can be replaced due to a fall and wear after PPE inspection .?An ASAP supplied complete with a 40cm ASAP'Sorber.