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Amazon.com: FONLAND K40 CO2 Laser Head with Air Assist for K40 Laser Engraver Cutter Engraving Machine, Lens Dia 12/18mm FL50.8mm & Dia 16mm FL25.4mm Mirror 20mm
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Amazon.com: Cloudray 12/18mm FL50.8 & 16mm FL25.4 Laser Head With Air Assist For K40 Laser Engraver Cutter : Arts, Crafts & Sewing
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