Features: 1. Applicable: Adapted To Fast Helmets, Using Matching Screws, Can Be Installed On Fast Helmets.2. : The Rails Are Beautifully Made And Fit Perfectly With The Helmet.3. Easy Installation: Use The Matching Screws And Nuts To Connect The Helmet To The Rail.4. Waterproof: The Side Rails Are Waterproof And Have Strong Weather Resistance.5. Multi-Function Rail; Helmet AccessoriesDescription: 1. Name: Helmet Rail Accessories2. Applicable Gender: Male, Female, Neutral/Both Male And FemaleNote: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The UseMaterial: 1-ABS+plasticcolour: C-Black Package Contents: 2 x Helmet Rails1 x Lanyard1 Set Screw Mounting AccessoriesOnly 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.