Durable and Inexpensive 3X Laser Beam Expander

This 3X beam expander is mainly used for handheld laser pointers. It is durable, cheap, and high-precision. It has passed quality testing, FDA certification, and CE certification.

Before buying, you need to know what you can do with a laser beam expander:
1) If you need a coarse beam, it can help you.
2) If you want to see a relatively small laser spot from more than 1 km, a laser beam expander can also achieve that. Under normal circumstances, if you don't use the laser beam expander in a place of more than 1 km, the divergence of the laser will form a super big laser spot.

Specifications
• Beam expansion: 3X
• Housing material: stainless steel
• Thread pitch: 0.5mm
• Connect hole size: 11.4mm
• Exit hole size: 29.2mm