CASE M Series Crawler Dozers – the industry’s first line of bulldozers with powerfully efficient SCR (Selective Catalytic Reduction) technology built in. Best-in-class drawbar pull and class-leading horsepower provide unbeatable pushing power, while enhanced controls with adjustable settings make it easy to match machine performance to ground conditions or operator preference. Even the cab has been redesigned to be quieter and more comfortable than ever before. More strength. More command. More done. Meet the M Series dozer.