This set of 8" heavy duty swivel casters from Gyptool is ideal for drywall dollies, carts, trucks or other equipment. Originally designed for the drywall dolly from Gyptool, these commercial grade casters are built for use in warehousing, construction, institutional, food service, food processing, retail locations and more. The pro-grade, non-marring 8" x 2" caster roll smoothly even under heavy loads. Built for professionals, this industrial-grade caster is constructed from high-capacity steel and has a genuine rated working load of almost 500 pounds. The rubber wheels resist water, grease, and most commercial cleaners. The double ball raceways provide easy turning for smooth swiveling action and the adjusting pin allows casters to be set to swivel or lock in place. The top plate measures 4-1/2" by 3-7/8" and is 1/8" thick. The distance between top plate bolt holes is 3" by 3-1/2" on center. Includes 2 - 8" x 2" heavy duty swivel casters.