If you've got a flashlight with a scratched or damaged lens, these PATIKIL replacement lenses are exactly what you need! Each pack comes with 4 circular tempered glass lenses that measure 1.18 inches in diameter with a thickness of 3.2mm. They also include silicone rings that help with waterproofing and preventing slipping. The tempered glass is way better than plastic lenses - it's scratch-resistant, has higher light transmittance, and is much more durable overall. Replacement is straightforward: just remove your flashlight's front housing, take out the old lens, and pop in one of these with the silicone ring. The clarity is excellent, so your flashlight will beam light more effectively without distortion. These work for various LED light sources beyond just flashlights too - any application where you need to protect a light bulb from wear and aging. Just make sure to check that the 1.18 inch diameter matches your specific flashlight model before ordering. Having a few spares on hand means you can quickly fix multiple flashlights or have backups for future repairs. For the price, you're getting quality components that will extend the life of your lighting equipment significantly. Definitely a smart buy for anyone who relies on flashlights for work, camping, or emergencies!