Features:*Made of tremendous material, and real looking to use*The lock core utilizing multi-way lock principle,using a variety of establishment of mechanical abnormity, prevent lock from drilling and master key opening.*The Lock cylinder guard against robbery function efficiently advanced the reliability and security of the lock,is your prefer for security.Specifications:Material:AluminumMounting Hole Dia:0.4cmColour: Silver TonePackage Contents:1 x Door Lock Cylinder3 x Keys1 x ScrewNote:1. The real colour of the item may be slightly different from the images shown on web page attributable to many factors corresponding to brightness of your visual display unit and light brightness.2. Please enable slight manual size deviation for the data.