Take the guesswork out of caster stem selection. Includes five wheels and 10 stem fasterner; 5 each 7/16in x 7/8in and 5 each 3/8in x 7/8in to fit most metal bases. Deluxe Futura CastersEuro-style, hooded caster fits 1.5in bases and features an oversized neck to create the illusion that the caster and the associated furniture base/leg are one continuous unit. Soft polyurethane wheels for hard flooring and chair mats. Caster/Glide/Wheel: Caster; Color: Matte Black; Color Family: Black; Stem Type: Grip Ring Type B Stem; Grip Ring Type K Stem.