This item is a necessary accessory for DIY engraving machine. It is a laser-head with high speed and high stability. laser-head with high speed, high precision and high stability. violet light, easy for locating when engraving.Adjustable laser-head, easy to adjust, engraving with good quality and high efficiency.Can be used to engrave bamboo, leather, cut paper, PCB or other flammable materials.Suitable for DIY engraving machine, easy to install.Material: brassColor: yellow Light Color: Violet: 1500mWWave Length: 405nmInput Voltage: 4.5-5VDiameter: 12mmLaser Working Temperature: 500 CelsiusItem Size: 1 * 4.5cm / 0.39 * 1.77in(D * H)Item Weight: 18g / 0.65ozPackage List: 1 * laser-headOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.