Made from Cold Rolled Metal sheet conforming to IS: 513 DD grade specifications. Outer Diameter: 17.2 mm, Inner Diameter: 15.45 mm, Height 24 mm. Thickness: 0.8 mm Single Contact Type. Surface Finish: Yellow Zinc Passivation or Blue Zinc Passivation. These are suitable for use by 2 wheeler manufacturers or by 2 wheeler lamp assembly suppliers or by Wire Harness Companies or 2 Wheeler Auto Spares manufacturers/suppliers