Enables GTPase activator activity. Acts upstream of or within several processes, including activation of GTPase activity; negative regulation of Rac protein signal transduction; and negative regulation of ruffle assembly. Located in focal adhesion. Is expressed in several structures, including axial skeleton; central nervous system; cranium; jaw; and metanephros. Orthologous to human ARHGAP24 (Rho GTPase activating protein 24). [provided by Alliance of Genome Resources, Apr 2022]