Box Two Cosine Chainrings are crafted in the US from 6061-T6 aluminum alloy, ensuring precision and durability. They are designed to fit 104 BCD four-bolt cranks and come in a black anodized finish with laser-etched graphics.
Box Two Cosine Chainrings are crafted in the US from 6061-T6 aluminum alloy, ensuring precision and durability. They are designed to fit 104 BCD four-bolt cranks and come in a black anodized finish with laser-etched graphics.
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