The Bombshell 180 Mini Cassette Wheelset-20×1 1/8 at J&R Bicycles is Bombshell’s first wheel in their new line, coming five years after the SLX wheelset. The ONE80 has been designed to be lighter and more rigid, with an oversized axle and redesigned driver you will get the power you need wherever you need it. It features a higher flange on the drive side which reduces spoke length and adds responsiveness to your pedaling.