DIMENSION: Total length * width * height: 6.6 x 4.4 x 1.6 cm / 2.6 x 1.73 x 0.63 in. Mounting hole diameter: 5mm / 0.2in. MATERIAL: Made of stainless steel, sturdy and durable, rust resistant, can be used for a long time to protect privacy, securely. EASY TO INSTALL: Place the bolt at the installation point and mark the screw holes. If the hardwood cannot be drilled manually, you can use a drill to pre-drill small holes before installation. WIDE APPLICATION: widely used in doors, gates, cabinets, bathrooms baths, windows, furniture, cat flaps, etc.