interne diameter: M13
| Material: | metal |
| Colour: | silver colour |
| Thickness / depth (cm): | 0.2 (0.08 inch) |
| Outer Diameter (cm): | 2.35 (0.93 inch) |
| Diameter of opening (cm): | internal diameter: 1.3 , M13 (0.5 inch) |
Silver coloured metal ring. Used in repair of old lighting. Also called sealing ring or cover ring.
