Cyber 5/32 Super Long Allen Wrench

After about a week or so of looking around, I can't seem to find anywhere to buy a hex/allen wrench long enough to get into the base of the light to get anything out. Anyone have a suggestion on where to find a 12-15" hex ext to get in there? I really don't want to have to take the sled out for some of these simple repairs.

Also, while I'm digging, am I going to need any other sizes in super long as well (so far I've found a need for 9/64, 1/16, 5/64, 7/64, but all in normal 7" or typical key sizes)

Thanks!
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