Specification Amount : 20.99 Binding : Unknown Binding Brand : MroMax Color : 18x30mm(od*l) CurrencyCode : USD Label : MroMax Manufacturer : MroMax MaterialType : Spring Steel Model : 18mm OD 30mm Long NumberOfItems : 10 PackageDimensions_Weight : 0.4188782978 PackageDimensions : L:5.4330708606 X W:4.7637795227 X H:0.8661417314 PartNumber : MRO190906S-0113 ProductGroup : BISS Basic ProductTypeName : INDUSTRIAL_WHEELS Publisher : MroMax Size : 10PCS SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/51OKxqmFuOL._SL75_.jpg SmallImage_Width : 75 Studio : MroMax Title : MroMax 3D Printer Die Spring 0.7" OD 1.18" Long Spring Steel Spiral Stamping Light Load Compression Mould Die Spring Blue 10Pcs 3D Printer Spring Bottom Connect Leveling Compatible with 3D Printer Bed Weight : 0.4 WeightUnit : pounds