Pro lite bracciano a42w aero road wheelsetthe a42w wheelset brings you all the excellence you've come to expect from the bracciano a42, but now with the performance boost you get with a wide rim. With its unique and sturdy all alloy aero rim, racers could already expect a lightweight experience without sacrificing acceleration adding a wide rim bolsters the performance across the board, increasing stability and weight distribution for a smoother ride on any terrain. Topped off with japanese ezo bearings, known for their low rolling resistance, you have a balanced wheelset hand built to maximize your racing potential.precision tuned power transferstress tested through no less than six cycles and hand adjusted at each step of the process, pro lite wheels offer a unique and reliable approach to fine tuning and precision that remains unmatched in terms of wheel design. Combined with a construction that entails keeping each spoke nipple flush to the hub flange, you have a wheel that keeps power transfer loss to an absolute minimum.features  material alloy 6061 rim, alloy freehub, axles,  rim depth 42mm  axle type qr  hub width 100mm front, 130mm rear  speed 9, 10, 11 speed  freehub compatibility shimano sram or campy  hub model bracciano  spoke lacing radial front, 2 cross rear  spoke count 20 front, 24 rear  spoke type aero bladed, 2.2mm double butted  bearings japanese ezo 2 front, 4 rear  weight 873g front, 1.05kg rearbuy pro lite wheels tyres from chain reaction cycles, the world's largest online bike store.