Hawkeye® Pro Super Hardy Borescopes .283″ (7.20 mm) Hawkeye® Pro Hardy Borescopes .250″ (6.35 mm) Hawkeye® Pro Slim Borescopes .165″ (4.20 mm) Hawkeye® Pro SuperSlim Borescope .098″ (2.40 mm) Hawkeye® Pro MicroFlex Semi-Rigid Borescopes .035″(0.9 mm)