Features: brand new and high quality Use for: engraving wood 、 leather 、 A flat organic material capable of burning. This item is a necessary accessory for DIY engraving machine. It is a professional laser for head with high speed and high stability. Professional laser for head with high speed, high precision and high stability. Suitable for DIY engraving machine, easy to install. Bright blue violet light, easy for locating when engraving. Adjustable laser for head, easy to adjust, ensure engraving with good quality and high efficiency. Can be used to engrave bamboo, leather, cut paper, P CB or other combustible materials. Specifications: Material:Metal Size:Approx.4.2x2.4x2cm/1.65x0.94x0.78inches Color:Black Power:1000mw/1500mw Wavelength: 405nm Working voltage: 5 V Working substance: solid Light transmission: through external light for path Output form: photosensitive device type Transmission signal: OC gate type Package Includes: 1x Laser-Head 1x Screwdriver 4x Screws note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.