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18mm Adjustable Holder/Clamp/Mount Heatsink Laser Module Pointer Lens Mirror

This is a 18mm inner diameter clamp specially made for fixing laser modules or laser pointers. It can be flexibly adjusted.
It is a 18mm inner diameter heatsink can prolong the duty cycle of laser -- normally, it can prolong the duty cycle of a 5mw red laser module to 8 hours.

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