Product SpecificationsName TTC6050 20W Laser KitModel TC20W Laser ModuleInput voltage 24VBody Color BlackOptical power 20000mWLaser module size 50x50x102mmFocal length 8mmEngraving precision 0 1mmSpot shape RectangularWavelength 450士5nmHeat dissipation mode Air CooledEngraving material Wood Plastic Paper Leather Bamboo Sponge Paper Stainless Steel Snowboard Acrylic