The USAVSNA-1.6-1000 from USA Borescopes is a Borescope with Depth of Field(DOF) 3 to 50 mm, Field of View(FOV) 120 Degree, Probe / Insertion Tube Diameter 1.6 mm x 5 mm, Probe / Insertion Tube Length 1000 mm, 5 mm (Distal Dip length), Probe / Insertion Tube Length 1000 mm, 5 mm (Distal Dip length). More details for USAVSNA-1.6-1000 can be seen below.