If you've got sliding doors that just won't stay put, these barn door floor guides are exactly what you need. You get 8 guides in the set - which is plenty for multiple doors or to have spares - plus 16 screws and anchors to get everything installed properly. They're made from this really durable POM plastic that's both strong and smooth, so your doors slide nicely without scratching up the bottom edges. Each guide measures about 4.55x2x2.3cm, which is that perfect size - not too bulky but still effective. What's cool is they work with both slotted and non-slotted doors, and the installation is straightforward. You just adjust the gap between the guide and door, mark your spot, and screw them into the floor using the included anchors. Even better - if you need to fine-tune the position after installing, you can just loosen the screws slightly and move the guide without drilling new holes. These work great for bypass doors (where doors slide past each other), pocket doors (that disappear into the wall), closet doors, and any other sliding door situation. They really keep doors from swinging or wobbling, making everything feel more solid and professional. For the price, getting 8 guides is a steal compared to what hardware stores charge for similar quality.