These sliding screen door rollers are the suitable solution for maintaining the smooth operation of your doors and windows. Made from stainless steel and copper, they offer exceptional durability and resistance to wear. Ideal for both residential and commercial applications, these rollers ensure your sliding doors and windows function effortlessly. Features -Color:Multi -Material:Stainless steel, copper -Size:4.00X1.20X1.00cm/1.57X0.47X0.39in -Wheel diameter: 12 mm -Hole spacing: 30 mm - stainless steel: made from stable material, these rollers offer durability and resistance to wear -Lightweight wheels: the good construction makes the screen wheels lightweight and easy to push and pull, enhancing usability -Smooth sliding: the roller design ensures smooth and stable movement, reducing friction and noise for a quieter operation -Versatile application: suitable for both screen doors and windows, these rollers are easy to install and use, providing convenience and flexibility -Noise reduction: designed to minimize noise and friction, these rollers ensure a quieter and more comfortable environment Package list: 4 x pulley wheels 8 x screws