[Floor Mounted]: Our barn door bearing guide was specially designed to make the bottom bracket stay absolutely flat on the floor without scratching by screws/bolts/nuts, more stable and beautiful.No groove required for the door, no drilling on the floor, perfect for carpet or tile. Quick and easy installation and adjustment: The sliding door guide with two screws makes it easy and effortless to mount by n 'anyone. Just adjust and tighten the screw in the bottom to secure the 3 wheels where you feel best. Sturdy and Dependable: High-strength solid steel base with black powder coat finish complements any style decorative, providing visual appeal for many years to come; high-precision POM roller leaves no marks for a smooth and quiet sliding door without wobbling.Universal Safety Guide: The sliding gate guides are rust-proof and durable, suitable for all types of interior and exterior doors, Top Sliders for Single/Double Barn Doors, Can be used in Bedrooms, Cabinets, Bathrooms, Living Room, Kitchens, Pantries, Restaurants, Garages, etc. Product Size: 12*6.5*5cmProduct color: blackDelivery quantity: One piece