Hey there! Worried about your sliding doors and windows being a bit too accessible? These LC LICTOP security locks are exactly what you need for peace of mind. This 8-pack gives you plenty to secure multiple entry points around your home. Made from lightweight but durable aluminum alloy with a sleek matte black finish that blends right into your decor. They fit tracks up to 3/8 inch thick - perfect for most standard sliding glass doors and windows. Installation is super simple with the thumb screw design - no special tools needed! Just pop them in and tighten. They limit how far doors and windows can open, which is great for keeping little ones safe indoors and deterring unwanted visitors from outside. You can install them horizontally or vertically depending on your setup. At just 1 inch long, they're effective without being obvious. Quick note - there might be a slight size variation of 0.4 to 0.8 inch due to manufacturing, but these work like a charm. Seriously, if you want to add an extra layer of security without breaking the bank or dealing with complicated installation, this 8-pack is totally worth it!