Upgrade your game room to the 21st century. Stop using tape, stickers, and mats to indicate a darts throwing line. Scuffs and movements make them peel and stretch, leading to inaccurate gameplay. The solution Switch to the Precision Laser Throw/Toe Line. This UL-approved approved throw line is easily mounted to your wall or cabinet in seconds. Once attached, simply measure out the distance on your floor and position the laser line accordingly. You'll enjoy easy, accurate competition that adds a high-tech touch to your den or game room. 180-Day Limited Warranty.