Specification Amount : 8.99 Binding : Unknown Binding Brand : MroMax Color : 16x50mm(od*l) CurrencyCode : USD Label : MroMax Manufacturer : MroMax MaterialType : Spring Steel Model : 16mm OD 50mm Long NumberOfItems : 2 PackageDimensions_Weight : 0.4850169764 PackageDimensions : L:3.8582677126 X W:3.8188976339 X H:1.3779527545 PartNumber : MRO190906S-0106 ProductGroup : BISS Basic ProductTypeName : INDUSTRIAL_WHEELS Publisher : MroMax Size : 2PCS SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/41QNIOcqbGL._SL75_.jpg SmallImage_Width : 75 Studio : MroMax Title : MroMax 3D Printer Die Spring 0.63" OD 1.97" Long Spring Steel Spiral Stamping Light Load Compression Mould Die Spring Blue 2Pcs 3D Printer Spring Bottom Connect Leveling Compatible with 3D Printer Bed Weight : 0.5 WeightUnit : pounds