No Drill Blinds: LazBlinds patented technology No Tools-No Drill system allow it no need to drill any holes on your window frame, great for Renter, Landlord, and Home Buyer. Easy to Install in 30 seconds with no tools-no drill, screws, or brackets. And it can afford maximum 30kg. Fit All Kinds of Walls, like woodiness metope, tile marble, concrete wall and rough tile. Cordless Blinds for Windows: The cord-free design provides a clean, tangle-free look to the window and creates a safer environment for children and pets. Easy to raise up or lower down to gently filter sunlight. Sound & Heat Insulation: The unique honeycomb structure creates air pockets to insulate your home against outside thermal energy in summer and keeps outside cold away from your warm house in winter by trapping air in the cells. It also works well in noise reduction and privacy protection, so as to provide you with a comfortable space. REAL Blackout Shades: The silver-plated layer inside the cell can completely keep out the sunlight and uv ray. Offering a real dark environment, bringing you a good night's sleep during the day. Perfect for bedroom. Lead Time and Service: We need a couple of days to complete your customized products after the order confirmation. One week for transportation. Please keep checking and responding to your Amazon messages until your order information is confirmed. If you have any issues or questions in the process of purchasing, installing or using, please feel free email to us by Amazon message and we will respond to you within 24 hours. LazBlinds No Tools No Drill Cordless Cellular Shades, Light Filtering Blackout Light Blocking Honeycomb Shades for Home, Thermal Insulation Blinds for Windows