Deluxe Duet Hooded Chairmat Casters, 7/16" Dia. x 7/8" Long and 3/8" Dia. x 7/8" Long Stems, 120 lbs./Caster, Matte Black Finish, 5/Set (23624) Takes the guesswork out of caster stem selection 2" dia. hooded dual wheels for light-to-medium duty applications. Includes 5 wheels and 10 stem fasteners; 5 each 7/16" dia. x 7/8" long and 5 each 3/8" dia. x 7/8" long to fit most metal bases. Soft polyurethane wheels for use on chair mats and hard floor surfaces. Weight Rating: 110 lbs/Caster. Matte Black Finish