Good to know, I'm new to all of this and this will be my first higher powered laser. I saw there is a only 70% throughput on the stock lens and since they're cheapish I thought I would give the other two options a try. I don't care to burn anything with it and I want a thicker/more visible beam...
I am purchasing a Sanwu 488nm pocket laser and I wanted to add a G2 and G7 lens, but there are 7mm and 9mm options on the site and I don't know which size to get? I checked the product specs and can't seem to find an answer.