cylindrical knob lock 5731ss

material: stainless steel finish: ss(satin nickel) size of lock case:60mm,70mm qty/ctn:30sets 1.pusting button in inside knob locks outside knob. 2.turning inside knob or key from outside will unlock latch. 3.outside knob may be retained in locked postion by pushing and turning button clockwise to a horizontal position:not released until button is manually returned to the vertical position. 4.inside knob always active.