Add this set of 3 smooth-rolling casters to your favorite light stand or boom stand for increased studio mobility. The heavy-duty, foot-operated brake lock on each wheel provides extra security and keeps your equipment safe. The 75mm wheels provide smooth rolling and make it easy to move your stands. The wheels are universal and fit all light stands, especially suitable for Selens light stands. Smooth-rolling wheels make it easy to move stands. Locking wheels provide security and safety for your equipment. Suitable for light stands with a diameter of less than 22mm. Color: Black + Silver Material: PU + metal Package Contents: 3 * Caster Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm. Effortlessly move your studio equipment with these durable and secure caster wheels. Enjoy smooth rolling and reliable locking for added safety.