This barn door guide is made of , which can withstand use. Features the plastic material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. Features -Color:White -Material:Plastic -Size:4.50X2.40X2.00cm/1.77X0.94X0.79in Hole distance: 25mm - with plastic material, good toughness, good wear resistance and good shock resistance, smoother and less noise after installation. - Mount it on the floor to ensure the door stays in-line with the rail above without swaying. - Floor mount system can be applied for most scene, adjust the position to fit your door panel, can fit your demands better. - Perfect for sliding barn doors, keeping the bottom of the door stable and preventing the bottom of the door from swaying when sliding, smooth operation and great alignment. - Outstanding workmanship, reasonable design, stable and practical, will bring you a . Package list: 4 x guides 8 x screws 8 x suspension tubes