Measuring 27.9mm*2mm, this hardened glass, water white lens has anti-reflective coating on both sides for 98%-99% light transmittance

Upgrade your flashlight with this lens that has anti-reflective coating and you will immediately notice a different is light output.

Fits Ultrafire 501x, 502x, 503x and 504x models and many others.

This upgrade AR lens is the least expensive way to get more light from your flashlight.

Buy extras for backups.