Sram Force 1x AXS D2 Power Meter Spindle DUB 172.5x40 DUB BLK

Its the best of both worlds - a light and stiff direct mount chainring with accurate Quarq power measurement elegantly hidden inside the DUB spindle DUB-PWR spindle-based unit measures left side power to calculate total watts Long battery life (400+ hours) with the user replaceable AAA lithium battery to power a season of rides Waterproof - IPX7 waterproof to 1 meter for 30 mins Lightweight - less than 40g heavier than standard crankset