The latest high tech innovation in dart throw lines is here in the Viper Laserlite Dart Throw Line! Never worry about sticking throw lines down to your beautiful floors again as the Laserlite projects a concentrated beam of light to indicate where you should be standing. The convenient Laserlite allows you to place the line directly into your dartboard, thereâ€™s no messy installation! You can adjust the line to your preferred distance, whether youâ€™re setting up the official tournament distance or changing it up for practice. The Viper Laserlite Throw Line mounts quickly and easily to any of our compatible electronic dart boards, just plug it right in! The throw line uses the power from the dart board for a great cord free look and no extra batteries! Sticky throw lines are a thing of the past with the Viper Laserlite Dart Throw Line!