Take the guesswork out of caster stem selection. Includes five wheels and 10 stem fasterner; 5 each 7/16" x 7/8" and 5 each 3/8" x 7/8" to fit most metal bases. Deluxe Duet Casters—2" diameter dual wheel casters with full hood. Black. Weight rated 110 lbs. per caster wheel. Caster/Glide/Wheel: Grip Ring Stem Twin Wheel Casters; Color: Matte Black; Stem Type: B; K; Weight Capacity (text): 110 lbs Per Caster.