Specifics:- Easy to install, replace your door viewer in 5 minutes with no tools required.- The lens will secure your home against burglary, intrusions and home invasion. - NEW BRAND   Suitable for door: 35-50mm Finish: Sliver / Gold Material:Zin Alloy + Optical Glass Fit Hole Size: 16mm diameter Degree:200   Package Include: 1 x peephole   Q: Are you trading company or manufacturer ? A: We are a factory which is located in Wenzhou City. Q: What is your quality control process? A: We are certified with ISO-9001, and strictly follow the ISO procedures. We do 100% testing for any of hardware products before the order has deliveried. Q: Do you provide samples ? is it free or extra ? A: Yes, we could offer the sample for free charge but do not pay the cost of freight. Q: What is your terms of payment ? A: We accept T/T, L/C for the large quantities order, and western union and paypal will be accept for the small quantities order of led flashlight.