Overview for LaserLine B1 Aluminum Laser Receiver Bracket The LaserLine B1 Detector Bracket can be used with any LaserLine Direct Reading laser rod. It is made up of lightweight aluminum with black anodized finish. It allows the laser detector travel the full working length of the LaserLine Grade Rod through its special rail slide. The LaserLine B1 Detector Bracket provides faster and easier readings without the need of having to loosen, move and then tighten the detector. The LaserLine B1 Detector Bracket is compatible with the following Laser Detectors: AGL LS-4 AMA D6, D7 Apache 34, 44 Lightening CST Berger LD100, 120, 200, 400 David White LD18 Laser Alignment 4, 5, 6, 7, 8 Laser Reference R4, R5, R7 (R8 Old Style, threaded hole) Leica LPD 15, 30 Nikon 3, DS-30, LS-6 Quadriga LY10 Sokkia LR100 Spectra Precision 1077, 1274, 1275 Trimble HR200