About this item 25mm Mini Casters : The package includes 12 flat directional wheels and 24 screws. The size of the wheels is 25mm,Panel length: 41mm, panel width: 18mm, wheel thickness: 13mm. The furniture castors are relatively small, which is very suitable for small devices of all kinds and can work smoothly. Strong Wear Resistance: The white wheels are made of plastics, which has strong wear resistance and will not damage the floor. The plate is made of high-quality iron-galvanized material, which is not easy to rust, wear-resistant, corrosion-resistant, hard and durable. Non-Swivel Wheel Casters: The casters are equipped with thicker plates and can move furniture on laminate floors and carpets smoothly, safely and quietly. This makes rolling and sliding on the floor easier and safer. Easy to Install: Fix the mini roller in a certain position, drill the hole and screw it into the screw, it is easy to complete the installation, and we can easily slide the object. Our ball conveyor wheel has a silent effect, reducing noise pollution and providing a quiet and good environment. Mini Casters for Furniture: Small casters has specific functions and can be attached to flight boxes, trolleys, tool boxes, furniture, trolleys, etc. Suitable for all types of floors, homes, shops, schools or hospitals.