ATOMSTACK 2PCS Atomstack 10W Replacement Focusing Lens for A10ProS10ProX7Pro Module and M50 Module and XT20Y40 Module Internal Focusing Lens - Walmart.com
ATOMSTACK A5 M50 Pro Laser Engraver, 5.5W Fixed-Focus 0.08mm Compressed Spot Laser Cutter and Engraving Machine for Wood Metal with Terminal Panel for Offline Engraving, Engraving Area 410x400mm - Amazon.com