Stans No Tubes Flow CB7 RimAsymmetric Bead Socket Technology brings Stans legendary easy inflation and the most reliable airtight seal to wider, offset carbon rims Custom carbon layup equalizes impact forces on both the long and short sides of the rim, making both stronger Asymmetric rim shape with offset drilling improves bracing angle and balances spoke tension to create a stronger overall wheel 250lb Recommended Maximum Rider Weight 27. 5'': 420g, 29'': 455g Attributes ERD