The DEFCON® Trapezoid Resettable Combo Cable Lock is a sturdy locking device with a pass-through loop on one end and a lock on the other. The 6.5-foot durable galvanized steel from which the cable is constructed is both cut- and rust-resistant so that it’s nearly impossible to destruct. And if someone attempts to remove the lock, it will noticeably damage the computer, alerting you to potential theft and preventing resale.