Box One 7075 Chainring MSRP USD $64.99 SKU: BX-CR154H Select options Back MSRP USD $64.99 Size41T42T43T44T Details Specifications DetailsSpecificationsBack Made in the US from 7075 aluminum alloy, Box One™ Chainrings are round and true. They fit 104-BCD four-bolt cranks. The 7075 rings come in sizes of 41 to 44-teeth only and have a durable hard anodized finish. BackBCD104mmMaterial7075-T6 AluminumOriginMade in USAThickness3.5mm41 Tooth84 grams / 2.9 ounces42 Tooth87 grams / 3.1 ounces43 Tooth90 grams / 3.2 ounces44 Tooth92 grams / 3.2 ouncesSee MoreSee Less