Bosch Self-Leveling Cross-Line Laser Kit GLL 2-50 VERSATILE: The Bosch GLL 2-50 offers vertical, horizontal & cross line modes and projects two lines independently or together for a wide array level and/or plumb applications VISIBLE: Offers highly visible laser lines up to 65 feet and the horizontal laser line fans wide to 130 and vertical to 160. SELF-LEVELING: The GLL 2-50 features Boschs Smart Pendulum System that allows the laser to self level and indicate out-of-level condition. It also locks when switched off EXTENDABLE: With the Bosch LR2 Line Laser Receiver and Boschs Pulse Laser Receiver Mode, users can extend the alignment by up to 165 feet in bright-light conditions CONVENIENT: The kit also includes the BM3 positioning device for micro-fine height adjustment, retractable feet for free standing mode, 1/4-Inch-20 tripod thread, strong magnets and a screw hole Class II laser product, &lt;1mW power output