Features: Crafted from strong ABS material, this set ensures a secure and stable fit for your helmets. Suitable for Motorbike enthusiasts who want to personalize their equipment. The design takes into account user convenience and a simple installation and removal mechanism, making it easy and fast to replace the lens base without the need for professional tools. The base structure is carefully designed to effectively improve the optical performances of the helmets mirror and ensure clear visibility during cycling. The base is antislip, which helps to fix the helmets mirror and reduce the risk of displacement during high-speed driving. Specifications: Material:ABS Length:Approx.8.5cm/3.35'' Package Includes: 1Set Helmets Visors Base note: 1.Please compare the detail sizes with yours before you purchase. Thanks!!! 2.Due to various types of computers and monitors,the actual color of the item may be a little different form the picture. 3.Please allow 1-3cm difference due to manual measurement.Thanks(All measurement in cm and please note 1cm=0.39inch 1inch=2.54cm)