This expander reduces beam divergence by increasing the beam diameter by three times. It extends the effective range of the laser beam(visibility) dramatically. Made with a solid stainless steel housing, this expander is fully focus adjustable allowing users to control and focus the beam to where they want.
Housing material: Stainless Steel
Expand Ratio: 3
Thread Pitch: 0.5mm
Connect hole size: 11.4mm
Exit hole size: 29.2mm