These sliding door guides can be installed on the floor and avoid it from swinging to the sides, let the door have every stable and smooth movement. Using reliable steel materials, sturdy and professional, work very well with all kinds of sliding doors, can offer you longer service. Features -Color:Black -Material:Steel -Size:4.00X2.70X2.00cm/1.57X1.06X0.79in - Simple structure but heavy duty, this floor guide can hold on the door track tightly easily, reliable for barn door. - Mounted on the floor to ensure the door stays in-line with the rail above, you can surely have a good using feeling. - Made of safe steel material, durable, not easy to break, can be used with confidence for a long time. - Aimed to avoid the door from swinging to the sides to have stable and smooth movement. - Can work well with all rolling door, sliding door, barn door, professional and safe, simple color can fit for different furnishing styles. Package list: 12 x Barn Door Floor Guides 24 x Screws 24 x Expansion Tubes