Specification Brand : uxcell BulletPoint1 : Hole Diameter (OD) : 18mm/0.7"; Rod Diameter (Inner Dia) : 9.5mm/0.37"; Free Length: 60mm/2.34" BulletPoint2 : 36mm/1.4" Compressed Length; 422N Load Capacity; 17.58 N/mm Spring Rate; Color: Blue BulletPoint3 : Material: The spring is made of alloy steel 65Mn, which is durable and reusable BulletPoint4 : Application: Used in maintenance and replacement of various equipment, such as stamping , injection , die machinery, printers and etc. BulletPoint5 : How to use: Put the spring into the pre-holes or set it into the outside of the support rod, select the right size as needed; Color : OneColor ExternallyAssignedProductIdentifier : 6946963218127 ExternallyAssignedProductIdentifier1 : 0679265214424 ExternallyAssignedProductIdentifier2 : 679265214424 FinishType : Metal ItemName : uxcell Compression Die Spring, 18mm OD 60mm Free Length 65Mn 422N Load Capacity Blue 2pcs ItemPackageDimensions_Height : 0.79 inches ItemPackageDimensions_Length : 4.72 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 2 ItemShape : Rectangular ItemTypeKeyword : compression-springs Manufacturer : uxcell Material : spring steel ModelNumber : Rilex NumberOfItems : 20 PartNumber : a20121800ux0103 ProductDescription : Specification: Product Name: Compression die spring Load Type: Light Load Color: Blue Hole Diameter(Outer Diameter): 18mm/0.7" Rod Diameter(inner Diameter): 9.5mm/0.37" Free Length: 60mm/2.34" (+/- 2mm) Max compression rate: 40% Material: 65Mn Package Content: 2 x compression die spring The loading grade of die springs in various colors (from lightest load to extra heavy load): yellow, blue, red, green, brown. In addition, because die springs are well suited for high-stress applications, they are also suitable for a variety of other applications as well.