The Hawkeye Pro Flexible uses the same 18,000 fiber acid-leached imaging budle as the Hawkeye Classic, and provides the same excellent resolution, sharpness, image detail, and contrast. Like the Classic Flexible, it comes equipped with the powerful, rechargeable SuperNOVA Light. Unlike the Hawkeye Classic Flexible, the Hawkeye Pro Flexible borescope incorporates 2-way articulation! You control the direction-of-view of the tip over a 240° range (+/-120°), in a single plane, using a thumb-lever on the aluminum borescope body. Lock the lever to hold a particular view. The Pro Flexible sets a new standard of excellence in quality and functionality, at a very reasonable price. Works great with video. A 90 degree prism tip is available as an optional accessory for the 5mm FPB5 model for those who need to view at 90° to the scope axis in small holes that prevent articulation. A 90° mirror tip is included in the PFB5-NVK and is not available for the 4mm or 3mm scopes.