Features 1、GG17 glass tube, strong thermal stress resistance, more resistant to high temperature, not easy to crack. 2、Stable output, laser single mode output spot, fine, faster cutting speed, higher power output. 3、The metal head surrounds the locking laser tube, and the coating process increases the output power and discharges stably, prolonging the service life. 4、High power output makes the working more steady and stable. 5、Professional and practical design with beautiful appearance, easy to use.​ Specification Features: GG17 glass tube, strong thermal stress resistance, more resistant to high temperature, not easy to crack. Stable output, laser single mode output spot, fine, faster cutting speed, higher power output. The metal head surrounds the locking laser tube, and the coating process increases the output power and discharges stably, prolonging the service life. High power output makes the working more steady and stable. Professional and practical design with beautiful appearance, easy to use. Specification: Length:700+-20mm/27.56+-0.79in Standard Wattage: 40W Maximum Wattage: 45W Package List: 1*Laser Glass Tube Package List