Peter,
Stronglight used their own bâtard sized threads on their 49, 93, 105 and other early cranksets.
The threads are 23,35mm x 1mm. Later version cranks used the industry standard 22mm x 1mm threads.
T.A. extractors are 23mm x 1mm and will fit loosely. There's a good chance that they will damage the Stronglight threads when you try to pull off the c rank arms.
Stronglight extractors come up on eBay about every 2 weeks. The originals have been going for ~$40-$50 USD.
Velo Orange has the US made J.A. Stein pullers for Stronglight cranks for $45.00.
http://www.velo-orange.com/
Good luck,
Chas. Colerich Oakland, CA
************** Worried about job security? Check out the 5 sa fest jobs in a recession. (http://jobs.aol.com/gallery/growing-job-industries?ncid=emlcntuscare00000 003)
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