ATOMSTACK A5 Pro 40W Laser Engraver Master, Wood Engraving Machine, Eye ..
ATOMSTACK A5 20W ATOMSTACK A5 Pro 40W ATOMSTACK R3 Roller ; Electric power : 20W : 40W : 24W : Laser output power : 4..5-5W : 5-5..5W : Automatic Rotary Roller for Laser Engraving Machine : Laser wave length : 455±5nm : 455±5nm : Engraving: longer cylinders, small diameter cylinders, over-length plate engraving, over-length plate cutting ..