... aluminum, copper dieFocus: fixed or adjustableSpot Diameter: 0.5mm (min)Beam Divergence: 0.1-2mrad Operating Voltage:DC5V-5.5VOperating Current ... make many kinds of laser modules ,like as dot ,line /cross line laser module,DPSS laser,uniformline laser,single longitudinal mode ... kinds of laser module.Shape of light: dot, single line,cross line ,collimated expanded beamwidth and length of line or diameter ...