DetailsCosine 7075:~ Precision CNC-machined from 7075 aluminum alloy, which is stiffer and stronger than 6061, yet just as lightweight. The rings also are Type-3 hard anodized to increase abrasion and wear resistance and to offer improved lubricity.
- • The 7075 Cosines come in 41-44 tooth sizes
- • All BOX chainrings are made in the U.S.A.
- • CNC-machined from 7075 aluminum alloy