1,Flat Design: This road prism has a flat design and is mounted on the road without interfering with the passage of the chan bright on the road. 2,500m Measuring Range: This road prism has a wide measuring range and is very practical with a range of application up to 500m. 3,Glass Protector: This highway prism comes with a glass protector that effectively protects the prism from scratches. 4,Wide Application: This highway prism is very widely used, which is suitable for monitoring the road, subway and so on. 5,Excellent ABS Material: This highway prism is made of excellent ABS material, which is sturdy and wear resistant, not easy to be eroded, high temperature resistant, and has a long service life. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.