[e118 Millie os 200 Series Grade 2 Standard-Duty Tubular Locks Performance Features + Tested to meet Grade 2 specification of 400,000 cycles, + Heavy-duty torsion springs provide longer performance life and prevent lever sag. + Concealed mounting screws. + "Anti-Lockout” feature. The entry function will have a free interior. If the door Is locked from the inside, it will unlock with the push of the interior side of the lever only or the tum of the button.