I am selling this item because I accidentally purchased it. I opened the package and discarded the bag, but the item is new and unused. This is for two sets, but it's also possible to purchase only one set, so please comment if you are interested. [Compatible Series] ● Fits Plus EZY ● Fits Plus NT ● Fits Plus Mesh ● Fits Premium ● Fits Unit (for closets and storage) ● Fits Case [Quantity] 4 casters per pack * 2 with stoppers, 2 without stoppers. [Size (approx.)] Maximum outer dimensions: Width 4 x Depth 5.5 x Height 7.5 cm * Height increases by 5 cm when using casters. [Material] Body: Nylon Shaft: Steel