Specification Binding : Unknown Binding Brand : Irenare Color : black Label : Irenare Manufacturer : Irenare Model : 1 NumberOfItems : 100 PackageDimensions_Weight : 1.3007273458 PackageDimensions : L:4.449999995461 X W:4.0599999958588 X H:3.9799999959404 PartNumber : DN-Irenare-1253 ProductGroup : Pet Products ProductTypeName : PET_SUPPLIES Publisher : Irenare Size : about 1.5 x 0.59 inches SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/51Sp-p0-9jL._SL75_.jpg SmallImage_Width : 75 Studio : Irenare Title : Irenare 100 Pieces 1 Inch Air Stone Cylinder Air Pump Aquarium Air Stone Accessories Aerator Diffuser for Small Buckets Nano Fish Tank Hydroponics Weight : 1.3 WeightUnit : pounds