Got out the bore scope today to use and mini mag light was is froze up tight so called gradient lenses and up graded to the led light source ( mine just made the new threads so it would work). The new unit is adjustable for amount of light and a whiter light than the mag light
Dealing with Gradient Lenses was quick easy and painless, Both ladies I talked to were very knowledgeable and helpful. The second one actually knew he different thread pitches and when they changed.