4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm. Permanent high visibility laser etched size marking on each socket for quick size selection when working. 6-point socket design, more securely locks the crank bolts, reduces wear, and prevents rounded corners.
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