crankset and handcranks

The crankset has three chainrings with 24, 34 and 42 teeth respectively. The handcranks attach to the 170mm crankarms using a standard bicycle 9/16" LH and RH thread. The three chainrings in combination with the seven speed cassette offer 21 widely spaced gears from 18.6 to 100.3 gear inches.