Specialites TA self-extracting crank arm bolts
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Also known as TA Auto-extractors.
Aluminum dust caps w/ chrome-plated self-extracting cro-mo M8 crank bolts eliminate the need for a crank puller. Universally suitable for square taper crank arms with standard M22 threading (such as Sugino, Miche, Andel, etc).
There are other self-extracting M8 crank arm bolts out there but these are the best.
• sold in pairs
• weight: 18g (pair)
• colors: black, silver