PRINCETON CAPACITANCE FUEL PROBES 10-00257 LL 18” BB 5” SS 2S Mounting flange was 10-00259 SAE 5 Hole flange So on the order it was as a note: Length 18” Bendable 5” 2 point setting 5 bolt pattern.
From Aircraft Spruce this is what I ordered to be the fuel gage probes for me. I started by bending the probes and using up the bendable section marked from the factory and then got my measurement for the side of the fuselage for the 3” hole saw to do it’s work. I had to clean up with the dermal and enlarged the center hole to fit the probe. I cut the probe 3” up from the bottom and put in place for me to drill the mounting holes. I then mixed up T88 structural resin with milled fiber for mounting.