3t orbis ii c50 ltd stealth rear wheelthe orbis ii c50 ltd stealth is the premium medium depth clincher wheel in the 3t orbis ii range of rim brake wheels a 25mm wide carbon fibre rim supports fat race weight clincher tyres at lower inflation pressures for more grip and comfort 3t linear system optimises build quality while the 50mm deep profile helps aerodynamic performance at typical angles to the wind featuresrim size etrto 622 x 17c 700c 25mm wide 50mm deeprim spec clincher fu