Specification: Color: Sliver,Gold,Bronze, Material: ABS Plastic, Suitable for opening: diameter 16mm Suitable for door thickness: 60mm-90mm Degree: 220   Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.   Package Included: 1 x Door Viewer   JIFU hardware Co.,Limited is a full service manufactuer based in Wenzhou,China. We offer a wide range of professional service to help our clients create a great selection of door lock and accessories. Whatever you are hardware supplier, door supplier, building project company, Supermarket promotion, JIFU is your company with great advantages on lead time and prices.