ITEM NAME:Motorcycle Helmet Visor Lens Screen Fix Base Protection Wind Resistance Description: Material: Plastic Size: Approx 40mm*40mm Easy to install. It can be very easy to fix your helmet lenses, so you can safe driving. Fitment for LS2 Helmet Lens FF370 FF396 FF394 FF358 FF386 FF387 FF310 OF569 OF578 Package Includes: 2 Pieces Helmet Screen Lens Mounting Base with Rotate Switch Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Easy to install.