Feature:1. Metal Gasket: The metal gasket design ensures a stable lock and can be used with confidence.2. 22mm Diameter: The caliber is 22mm, and the light stand pin of 22mm diameter can directly insert it to use.3. Double Fixation: With brake and locking shrapnel for double fixation, the swivel caster is convenient and fast to use.4. Durable to Use: The locking caster set is made of iron and plastic materials, with high hardness, durability and long service life.5. Widely Used: The swivel caster wheel has a wide range of use, it can be used for all kinds of light stands and photography tripods with 22mm / 0.9in leg diameter.Specification:Item Type: Light Stand Swivel CastersMaterial: Iron + PlasticProduct Color: As Pictures ShownWheel Diameter: Approx. 50mm / 2.0inCaliber: Approx. 22mm / 0.9inProduct Weight: Approx. 736g / 26.0ozScope of Application: The swivel caster wheels can be used for all kinds of light stands and photography tripods with 22mm / 0.9in leg diameter..Package List:3 xLight Stand Swivel Casters