3M Protecta Cobra Rope Grab with Extension Strap & Snap Hook AC202/033M Protecta Cobra automatic rope grab for use on 3 strand rope lifelines. The rope grab automatically follows you, giving you maximum freedom and hands free operation, it also includes a manual option that allows you to fix the rope grab in place making it ideal for restraint or work positioning applications. It can be detached or removed anywhere along the lifeline. The rope grab utilises a cam lever brake to lock the rope grab onto the lifeline in