Add these Swivel Casters to any of our Stainless Steel Bases to create a mobile base for your arrangements. Casters have threaded stem that thread into the base, securing them so they will not wobble or fall out. Swivel bearing and axle have grease fittings. 5-in. (12.70cm) diameter wheels allow for easy movement throughout your facility. Base with Casters adds 6.75 in. (17.15cm) to Cage Arrangement height. Bases up to 6-ft. (1.83m) long require four Casters, two with wheel brakes. Bases 6-ft. 6-in. (1.98m) long to 10-ft. (3.05m) long require six Casters, three with wheel brakes. Please Note: Casters are not recommended for L-shaped Aristocrat Cage Arrangements.