Professional grade laser level. Mini-torpedo design with handy no-dog attachment for bending. Three rare earth magnets provide superior holding strength. Compact size with 80-plus yard range. Laser is capable of working on all planes. Four vial design - 0°, 90°, 45°, and 30°. V-groove on bottom for mounting on curved surface. Offsets and calculations permanently laser-engraved on to level. Requires (2) N style batteries.