The EC-1108 cutaway Eaton transmission has been designed for teaching Eaton heavy-duty transmission theory and operation. This model provides several forward speeds and reverses, consisting of a front section and an auxiliary section. The auxiliary section contains LO and HI range ratios, and the L and H splitter gear ratios. When in HI range, the gear ratios can be split by using the splitter control button. This model is driven by hand crank.