Item Type: Light Stand Swivel Casters Material: Iron + Plastic Product Color: As Pictures Shown Wheel Diameter: Approx. 50mm / 2.0in Caliber: Approx. 22mm / 0.9in Product Weight: Approx. 736g / 26.0oz Scope 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 x Light Stand Swivel Casters 1Metal Gasket: The metal gasket design ensures a stable lock and can be used with confidence. 222mm Diameter: The caliber is 22mm, and the light stand pin of 22mm diameter can directly insert it to use. 3Double Fixation: With brake and locking shrapnel for double fixation, the swivel caster is convenient and fast to use. 4Durable to Use: The locking caster set is made of iron and plastic materials, with high hardness, durability and long service life. 5Widely 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.