... 2. For precise location 3. Concentric output beam RED light pointer for laser machine It is the sparepart ... machine, for high precise targeting the processing location.Features: bright red output, glass collimating lens, and a concentric output beam.SPECIFICATIONS ... : Power output (typical): 4mW. Wavelength: 650nm, RED.Beam size: 5mm x 1.5mm.Beam divergence: >0.3mRadians ...