Zircon 62199 StudSensor SL Stud Finder and LaserBall 360 Laser Level Kit LaserBall 360 laser level projects a straight laser line 360 degrees in any direction on your walls Swivel laser level to project a straight line in any direction using its exclusive 4-way bubble to level or plumb in any of four directions Laser level's mounting cup temporarily fastens to wall for hands-free operation StudSensor SL stud finder locates wood or metal studs up to 3/4 in. (19mm) deep Stud finder's exclusive SpotLite Pointing System shines a bright beam of light over stud edges