I ordered the 8.5mm version to replace my snap on unit.(Not pictured) The snapon unit is the size of a small multimeter (about size of complete screen assembly on this) but in theory should have been higher quality for the price (does not have an articulating head however)In comparison, the Teslong has a far better image quality, the light is almost double the brightness at max setting, has a (included) removable 32gb SD card, and a padded case vs just a cover style case.I have not had a lot of test time with this since borescopes are not used daily for me, but overall I am more impressed with this compared to the SnapOn (BK3000-55)Only complaint I have so far, and it appears another review had the same issue (though with the 5.5mm version) my camera is aligned 90 off from the articulation, which is workable but inconvenient and confusing when trying to coordinate where you are and going.
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