inner diameter of the ring 12-12.5mm
Brand Laserland

Check the listing for details. Adjustable Holder Clamp Mount Heatsink Stand for Laser Diode Module Pointer. Condition: New. Listed at 9.98 USD. 12-12.5mm ring for 12mm laser module. 16-16.5mm ring for 16mm laser module. 18-18.5mm ring for 18mm laser module. 22-22.5mm ring for22mm laser module. 25-25.5mm ring for25mm laser module.

$7.98
$9.98