Focusing Ring Option?

[Danny K]

Hey guy. Before I buy this: Survival Laser I 445nm Parts Bundle - Laser Components Only I have a question. What does the extended length focusing ring do and should I add it to my order?

:thanks:

 

[T_Warne]

It keeps you from burning your fingertips in the beam.

 

[Danny K]

Oh so when your trying to change the focus of the beam when it's on. Now I understand.