1、High Strength: These small caster wheels adopt sturdy steel and soft rubber material, which can glide smoothly and quietly, protecting hardwood floors without leaving a mark. 2、360 Degree Rotating: These plate casters are featured with 360 degree rotating design, convenient and flexible, allowing you to move the furniture easily. 3、Locking Mechanism: Each 1 inch caster is designed with locking mechanism for maximum safety, which can create convenience and safety in use, you can lock the rubber wheels and keep furniture in place. 4、Wide Application: These small furniture casters are suitable for small projects and movable furniture including dressers, crates, under bed storage , shoe bins, toy bins, cabinets, bookshelves, easels. 5、Easy Installation: This caster wheels set comes with 16 screws for simple installation, no complicated steps, saving your time and effort. Item Type: Small Caster Wheels Material: Steel, Rubber Function: Suitable for Small Projects and Movable Furniture Total Size: Approx. 38.3 x 25 x 1mm / 1.5 x 1 x 0.04in (Manual Measurement, Slight Error May Exist) Steel Plate Size: Approx. 30 x 19.8 x 37.8 x 27.4 x 4mm / 1.18 x 0.78 x 1.49 x 1.07 x 0.16in (Manual Measurement, Slight Error May Exist) Wheel Width: Approx. 12.5mm / 0.5in (Manual Measurement, Slight Error May Exist) 4 x Small Caster Wheels 16 x Screws