Specification Amount : 12.21 Brand : Yinpecly Color : Blue CurrencyCode : USD Label : Yinpecly Manufacturer : Yinpecly MaterialType : Spring Steel NumberOfItems : 5 PackageDimensions : L:1.96850393500 X W:1.96850393500 X H:1.96850393500 PartNumber : BM7900S0912IG-FBA ProductGroup : BISS Basic ProductTypeName : GROMMETS Publisher : Yinpecly Size : 8-4-25mm SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/519VoO67IDS._SL75_.jpg SmallImage_Width : 75 Studio : Yinpecly Title : Yinpecly 3D Printer Die Spring 8mm OD 4mm ID 25mm Long Heated Bed Springs Spiral Stamping Light Load Mechanical Compression Mould Die Spring Blue 5Pcs