Petzl has reported a couple of instances where cracks may have developed over time in the arms of the ASAP LOCK (B71 ALU). While a cracked arm presents no additional immediate risk to the user, as with any personal protective equipment (PPE), the presence of such a crack requires immediate retirement of the device. In the unlikely event that someone finds an ASAP LOCK displaying cracks, Petzl America will replace these units under their standard product warranty.