Pro lite bracciano dark label a42w aero wheelsetbased on pro lites popular a42 model, the bracciano a42w wheelset has wider rims to give you better handling and grip. These road bike wheels have a fine tuned weight distribution to add stability and make for a smoother experience, even on rough terrain. Plus, rolling resistance is a threat of the past as with the inclusion of excellent japanese ezo bearings, you'll find maintaining your speed has never been more assured. This special edition version of the bracciano a42w retains all the excellent qualities of its namesake, but with a sleek, stealthy look.efficient power transferwith an approach to stress testing that ensures each wheelset has endured at least six full design cycles, each with hands on fine tuning, pro lite wheels are built to perform and keep performing. Additionally, by ensuring each spoke nipple stays as flush to the hub flange as possible, each wheel limits the amount of opposing drag, allowing for an excellent power transfer that gives exactly as much as you put in.featuresmaterial rim alloy 6061 main hubs aluminium rear freehub alloy spokes 2.2mm double butted sandvik stainless steel nipples alloy 14g axles alloyfinish shot peened blackrim type clincherrim internal width 19mmrim depth 42mmrim joint type sleevedrim etrto 19 622 spoke type aero bladedspoke lacing pattern front radial rear radialhub bearings sealed cartridge, front 2 japanese ezo rear 4 japanese ezo cassette compatibility shimano sram or campyaxle type quick release qr front qrx100mm, rear qrx130mmtubeless ready yes tubeless kit required, sold separatelyincluded wheelset, qr skewers, 2x rim tapeentirely hand assembledweight front 873g rear 1043gbuy pro lite wheels tyres from chain reaction cycles, the world's largest online bike store.