DIY Supplies : MetalworkingMaterial : Carbon SteelCertification : NONEProduct Description:Product Name: Roller Chain / Chain ConnectorModel: #25 04C-1Tooth pitch: 1/4" (6.35mm)Material: Carbon steelRoller Chain Length:0.5meters/1meters/1.5meters/5metersNote: The data is for reference only, please refer to the real object! Remarks: If you have special needs, please contact us, we can customize according to your needs!Package Include:According to your Choose * 1