Specification Brand : uxcell BulletPoint1 : Specifications: Model: #420; Material: Carbon Steel; Surface Treatment: Peening; Plate Thickness: 0.05inch; Pitch: 1/2inch; Pin Diameter: 0.15inch BulletPoint2 : Material: Made of carbon steel materials, finely processing, precision processing, strong, anti-oxidation, and durable. BulletPoint3 : Appliance: This chain link roller connector is Easy for drive chains. Regular cleaning and lubrication can extend service life. BulletPoint4 : How to Use: You can use appropriately sized circlip pliers to take apart the old chain link roller and remove it from the chain. To install the new chain joint, insert the pin first, then snap the spring clip in. Wear gloves carefully for safety. BulletPoint5 : Note: Please pay attention to the size and model before ordering. ItemName : uxcell 5Pcs #420 Chain Offset Half Link Roller, 1/2" Pitch Carbon Steel, Standard Chain End Connector Split Links ItemPackageDimensions_Height : 0.59 inches ItemPackageDimensions_Length : 3.54 inches ItemPackageDimensions_Width : 2.36 inches ItemPackageQuantity : 5 ItemTypeKeyword : roller-chains Manufacturer : uxcell NumberOfItems : 1 PartNumber : f24042500ux0389 ProductDescription : Description:Made of carbon steel materials, finely processing, precision processing, strong, anti-oxidation, and durable. This chain link roller connector is Easy for drive chains. Regular cleaning and lubrication can extend service life. You can use appropriately sized circlip pliers to take apart the old chain link roller and remove it from the chain. To install the new chain joint, insert the pin first, then snap the spring clip in. Wear gloves carefully for safety. Please pay attention to the size and model before ordering. Specifications: Model: #420 Material: Carbon Steel Surface Treatment: Peening Plate Thickness: 0.05inch Pitch: 1/2inch Pin Diameter: 0.15inch