The Baseline series delivers the crucial goods. Wheels can be one of the most expensive parts of your bike, but they don't need to be. The Baseline cassette wheel is everything you need to hit the streets, park or trails: Start with a double-wall, 38mm wide rim that works with or without brakes, laced tight and right to an alloy shell, 5-sealed bearing cassette hub. A 14mm chromoly male axle and chromoly 9T driver with 72 points of engagement puts the power to the ground.