Features 1、Only applicable to Laser Master 2 Pro. 2、Laser head lifting device, better use experience of engraving machine. 3、Twist the button to adjust the focal length of the laser head, making it more convenient to adjust the laser head. 4、Made of high quality metal, with fine workmanship, stable performance and high work efficiency, and is an essential part of linear motion. 5、Any problem, please contact our store without hesitation. Honor to serve you. Specification Features: Only applicable to Laser Master 2 Pro. Laser head lifting device, better use experience of engraving machine. Twist the button to adjust the focal length of the laser head, making it more convenient to adjust the laser head. Made of high-quality metal, with fine workmanship, stable performance and high work efficiency, and is an essential part of linear motion. Any problem, please contact our store without hesitation. Honor to serve you. Specification: For: Laser Master 2 Pro Material: Aluminum Alloy Package Size: 180 x 80 x 80mm/7.1 x 3.1 x 3.1in Package Weight: 213g/7.5oz Packing List: 1 x Laser Head Focusing Controller Package List 1 x Laser Head Focusing Controller