This product has been discontinued.
Extech BRC-EXT  

BRC-EXT: Extension Cable for BR50/BR80 Video Borescope

37" (0.95m) Cable for Increasing Viewing Distance

The BRC-EXT is a borescope extension cable. This extension cable measures 0.9 m long with a 19 mm diameter. For use with borescope model BR80. A maximum of 2 extension cables can be connected to the borescope.