Specification:
Color: as shown in the picture
Material: manganese steel
Product Size: 5.3x3cm/2.09x1.18in

Package details:
4 x sliding screen door rollers
4 x mounting screws

Note:
Due to manual measurement, the size and weight may have a certain error.
Due to the difference between monitors, there may be a slight color difference.
Product Lists: You will receive 4 pieces of sliding screen door rollers, along with 4 mounting screws, compatible with a variety of sliding screen doors. Sufficient quantity for you to use and replace.
Quality Material: These tension springs are made of good-quality manganese steel, with a sturdy and reliable structure, not easy to damage, and can withstand daily use.
Smooth and Quiet Sliding: These roller assemblies are equipped with precision ball bearings to prevent shaking. Keep the door always aligned and make your patio screen door open and close noiselessly.
Easy Installation: Just dismantle the old roller and put in the new roller, and click it into place to restore the smooth operation of the screen door. No special tools are required.
Compatibility: Our screen door roller measures about 5.3x3cm/2.09x1.18in with a 0.6cm/0.25in roller thickness, which can replace B638, B687, B639, and B756 used on top and bottom.