Description: - 【Gate Wheels】: This Gate Wheels are good for providing stability and control to your doors. - 【Durable Material】: This Spring Loaded Gate Casters feature a thick 5mm iron frame, ensuring a longer lifespan and strong performance. - 【Flexible Rotation Support】: The Gate Support Wheels are equipped with plates that allow 360° flexible rotation support for enhanced stability. - 【Retractable Design】: The Gate Helper Wheels are retractable and adjustable in height, making it suitable for different types of doors and floor levels. - 【Wide Application】: The Heavy Duty Gate Wheels are suitable for outdoors, wooden gates, fence gates, yards, farms, and uneven floors. Specification: - Black: Total Length 7.5cm/2.95inch, Base Plate 9.5cmx6.2cm/3.74inchx2.44inch, Installation Height 21cm/8.27inch, Hole Spacing 7.5cmx4.5cm/2.95inchx1.77inch, Retractable Length 3cm/1.18inch, Wheel Size 5cm/1.97inch - Red: Total Length 13cm/5.12inch, Base Plate 9.2cmx6.2cm/3.62inchx2.44inch, Installation Height 26.5cm/10.43inch, Hole Spacing 7.5cmx4.5cm/2.95inchx1.77inch, Retractable Length 3cm/1.18inch, Wheel Size 10cm/3.94inch - Gray: Total Length 27cm/10.63inch, Base Plate 9.5cmx6.8cm/3.74inchx2.68inch, Installation Height 24cm/9.45inch, Hole Spacing 7.3cmx4.5cm/2.87inchx1.77inch, Retractable Length 4cm/1.57inch, Wheel Size 10cm/3.94inch Package Includes: 1 Gate Wheel Note: Please allow slightly errors due to manual measurement and different monitors.