Description This swivel caster is Made of aluminum alloy, plastic and iron with heavy-duty construction,durable and solid enough. It is Easy to put on and have plenty of swivel motion, Easy and smooth rolling. Add this set of 3 smooth rolling casters to your favorite C-stand or boom stand for more mobility in the studio. Locking wheels give safety and security to your equipment.Smooth rolling wheels make moving stands a snap. Its rubber base is perfect for its non-slip design and lock system suitable for the light stand which diameter less than 22mm. Colour:Black + Silver Material:PU+metal Berat: 704g Wheel Material : Plastic and Rubber base Wheel Size : 5Cm Feature : Durable ,solid enough,Stable,heavy duty construction