Good Adaptability: The lens assembly can be used as the replacement parts for 6000, 6700, 6800 series of full face respirator mask. It also can be used for other 6800 full face respirator mask on the market. Good Economic Replacement: You can replace the lens for your mask if the lens of it is defective rather than replacing the mask. Use it to save your money. Good Performance: The lens assembly 't fog up because of the special pre-processing. Easy to install: It is very easy to replace it by yourself, just need a screwdriver. Replacement Parts Lens Assembly and 20 Packs 6885 Lens Cover for 6885, 6000, 6700, 6800, 6900 Series Respirator Mask Colour:transparent Material:plastic Package Contents: 1 * Lens Assembly 20 * Lens Cover(Random Style, don't accept the specified Style) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.