Indicator door lock has the characterized of elegant, clean, wear- at any public places. Size:7.80X7.70X2.20cm/3.07X3.03X0.86in (lock cylinder) The door lock green red indicator is made of copper and stainless steel, which is sturdy and tough, not easy to break or deform, can be used for a long time. The door lock green red indicator is simple to use, simply turn the knob to the inside to lock and unlock, very convenient. Size:5.20X5.20X2.80cm/2.04X2.04X1.10in (rotary knob) Open (green)/closed indicator shows whether the room is occupied, convenient and simple., Weight: 0.85098433132 Pounds, Manufacturer: Hipzeepo