■ Round spokes and aero spokes. Fitting has a monkey wrench, to tighten. Speed Sensors up to distance and choose from 4 mm and 7 mm in size. Strong and tighten and damaging the spokes as the difference display, so please be careful. ■ Width is less than 3 mm (of aero spokes Sapim CX – Ray, etc); If the sensor for parallel and angle that it may be slightly. Magnetic force is so powerful function and is no problem. * Color of the product may look different depending on the type of computer monitors, and display. Color or customer returns, exchanges are not allowed. In addition, the product details, logo, etc to the improved design is different, please understanding. May be altered to