These are Insight CF-010 replacement xenon incandescent lamp.

Brand new in generic packaging.

Model: CF-010
Input Voltage: 3V (1 x CR2 Battery ONLY)
***Do NOT use Rechargeable Batteries***
Output: 40 Lumens


Compatible with:

Insight / Streamlight / EOTech

X2
X2L
Springfield Armory XML


And all models using the Insight/Streamlight/EOTECH CFL-010 lamp assembly.

***NOT Compatible with any other lights***

Runtime:

1 x CR2 Battery: ~1 hour