hanshi
Cannon
I've owned two of the tiny bore lights from O'Reilly and they are about as good as you can get. But when the batteries die replacements can cost as much or more than the original light WITH batteries. I'm considering a bore scope with screen at some point. They aren't that costly as such things go. Had a cheap bore scope but it was lost during our move. I recall it was only around $16 or so.