1. 4-Pack MR11 Retaining Spring Ring Clip, with a diameter of 42MM, for LED or halogen bulb holders. These clips are designed for reliable use. 2. They are fast, simple, and easy to use. The snap clips are durable. They can hold the bulb firmly. This applies to high-pressure or low-pressure lamp retaining spring clips and can also be used with other standards for LED or halogen bulbs. 3. The material is manganese steel with high-temperature electroplating. The LED downlight holder is made of stainless steel, which has relatively high corrosion resistance and strong oxidation resistance, and can be used for a long time. 4. Their use is to retain the bulb with spring clips to prevent it from loosening or falling, holding the bulb firmly. 5. The spotlight circlip bracket has a certain diameter (not specified completely in the text), and it is suitable for most lamps, such as concealed downlights, LED or halogen bulbs. 6. The fixed spring clip is thin and flexible, so it is relatively easy to open and install. Simply insert the closed end of the clip into the circular groove in the lip of the bulb housing, squeeze the open ends of the clip together, and push it into the housing. 7. The bright silver clasp/clasp/clip is suitable for replacing old clips that are damaged or lost. It can be used for a long time, saving some extra time and money. 8. These are lamp holder spring clip ring buckles for spotlight bulb holders, LED downlight holders for spotlight recessed downlights, and halogen bulbs.