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Cal.552 Regulating

L
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Hey, I'm looking to adjust my cal. 552 (swan neck), but not sure what screwdriver size I should use. Does anyone know? Thanks!
 
Archer
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L Locrian
Hey, I'm looking to adjust my cal. 552 (swan neck), but not sure what screwdriver size I should use. Does anyone know? Thanks!

One that fits. I usually use a 0.6 mm.
 
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