Description Self-Leveling Line Laser (Red Laser Beams) | Total Tools CanadaWorking Range: 0~20 m1 Horizontal Line4 Vertical LinesLevelling accuracy: ±1.5mm at 5 mLine accuracy ±1.5mm at 5 mLevelling time<3sSelf-levelling angle ?4°Laser Type 650nmLaser Class ?,<1mWPacked by color boxWeight: 5 lbsPCS/SBOX: 1PCS/CTN: 8