The 3T Acccelero 40 Team Carbon/ Aluminium Clincher Wheelset is a light, strong clincher wheel with outstanding aerodynamic performance shaped by the same windtunnel studies as the mighty Mercurio tubular wheel. The aero rim is 43 mm deep x 23 mm wide & is carbon fibre, which is bonded to a 6000-series alloy tyre bed/brake track extrusion. This means the rim is light, & braking is effective using standard brake blocks for alloy rims. The structural carbon fibre rim is thicker where it mates with the alloy tyre bed, conferring great strength where it's needed to locate the spokes. The standard Sapim CX-Ray spokes with alloy nipples effectively sustain the high tension needed for a stiff, high-performance wheel. Accelero 40 Team is the ideal wheel for all-conditions use with the best clincher tyres available today. There are separate versions for Campagnolo (10/11 speed), & for Shimano (10/11 speed)/SRAM.