you have to pour directly into your tyre

6mm and 30

SPROCKET MATERIAL Steel/ aluminum

Durable Water Repellent finish

Clamp diameter: 20mm to fit 22mm bar

SRAM Rival AXS XLPR E1 Power Meter Spindle Crankset - 68-73mm and BB86-92 - 28.99mm DUB - SRAM Direct Mount - 165mm - Grey NoAusPost you have to pour directlyWe cut grams out of our aluminium crankarms, but didn't cut corners on power measurement. Our light and accurate spindle based power unit nestles into our striking redesigned arms to give you the data you need, and our newest direct mount chainrings are light and stiff while looking good. Features Spindle based unit measures left side power to calculate total watts Long battery life (400+ hours) to power a season of rides User replaceable AAA lithium