Solid Construction: The light stand swivel casters are made of high-quality metal materials, which can provide stable support for the light stand and ensure that the equipment will not be unstable or tipped during use, thus improving safety. The wheels are made of high-quality PVC material, which is highly durable, non-slip and silent, and can withstand the weight of equipment and the abrasion caused by frequent movement. | 0.87inch/22mm Diameter: 3 packs swivel caster wheels with diameter of 0.87inch/22mm, fit with most light stand legs that have a diameter of 0.87inch/22mm. Please confirm the diameter of the stand leg before purchase! | Easy to Install: You only need to connect the light stand legs to the swivel wheels and tighten the knob to start using it. Installation and removal are very simple and quick. | 360°Swivel & Step-On Brake: These items can rotate freely 360 degrees, and you can move the devices in any direction just by pushing them without having to readjust the position of the light stand. To keep the light stand stable, you only need to step on the brake to secure the wheels. | Improve Efficiency: By reducing the time and effort of moving equipment, C stand casters can greatly improve work efficiency, especially in photography and lighting arrangements.