Remember when you had the perfect wheels? Add some mobility into your DIY project with some WEN Swivel Casters. Made from durable non-marring black rubber, these reliable wheels measure in at 2 inches in diameter with a 0.8-inch tread width (50 by 21 mm). Ball bearings reduce friction for smooth rolling. Plate measures in at 2.5 x 1.9 inches (65 x 48 mm) with four 6.5 mm mounting holes. Mounting hardware not included.