50mm 50mm 100mm (LxWxH including fan). TTL ; 0v- Off , 5v open, pwm frequency <9Khz. 20mm at 0.12 (mm). 15 degrees to 45 degrees. Focal length: 20mm;(can not adjustable)can not output parallel Beam.Can be carved materials: stainless steel, iron, aluminum, ceramics, stone, wood, bamboo, leather, plastics, etc. 1 X 450nm 15000mW laser module with TTL Driver board. 1 X US power supply. We manufacture laser from 2007. All products are developed and manufactured by ourselves. Please be sure not to dismantle the item unauthorized. The item "Industrial 450nm 445nm 15W 15000mW blue laser diode module engraving metal" is in sale since Monday, March 20, 2017. This item is in the category "Business & Industrial\Healthcare, Lab & Life Science\Lab Equipment\Lab Lasers & Photonics". The seller is "lyzq2000" and is located in shenzhen, guangdong. This item can be shipped worldwide.