It's never a good idea to guess with measurements, that's what measuring tools are for. You get great flexibility since it runs on a battery and lacks a cord that can restrict your
From Amazon
VOLTCRAFT VC-8919590 USB Endoscope Probe Diameter: 8 mm Probe Length: 9.85 m
Conrad Electronic
VOLTCRAFT VC-8919590 USB endoscope Probe diameter: 8 mm Probe length: 9.85 m