Parameter:

Material: Metal
Color: Black
Dimensions 14mm*14mm*165mm
laser component

Feature:

Designed for 12mm laser modules to make green, red or violet/blue and IR laser pointers.
Uses two 2xAAA batteries 3V to drive it after you assemble the laser pointer.
You can DIY it with the module and asseble them together. you will enjoy your DIY laser pointer pen.