Features: Achieve smooth and long lasts gate movement with this 304 steel rotating swivel pulley for mobile entrances. The 360°rotating design allows for convenient operate of your slidings entrance system. Suitable for residential homeowners, property managers, and installation and maintenance engineers who require stable gate movement. Delicate pulley rollers is solid for long terms use; The swivel pulley craft from heavy steel, moistures resistance, corrosion resistance, and rusts resistance; Used for mobile door, slidings door, slidings wheel and machine part. Specifications: Material:304 Steel Option Type:#48 Type Swivel Pulley,#48V Type Swivel Pulley,#48 H Type Swivel Pulley,#68 Type Swivel Pulley,#68 V Type Swivel Pulley,#68 H Type Swivel Pulley, 360°Rotation Thickness:Approx.22mm/0.87in Outer Diameter:Approx.48mm/1.89in Package Includes: 1pc Swivel Pulley note: Please allow 1-2cm errors due to manual measurement,please make sure that you donot mind befores you order. Due to the differences between different monitors, the picture may not reflect the actual item color.