Amazon.com: CNC Laser Head 7W Blue Laser Module, Used for Engraving Wood and Stainless Steel, can Cut 3mm Plywood, with PWM/TTL : Arts, Crafts & Sewing
An Endurance FAP 800 Coherent infrared laser module 15/25/30/40/50 wat – Endurance Lasers
445nm 4W high quality blue laser module (FAC) high power laser head - BeamQus