An exercise dumbbell includes a handle assembly and weight plates maintained in spaced relationship relative thereto. At each end of the dumbbell, a weight selector is maneuverable into and out of engagement with desired weight plates to secure same relative to the handle assembly. The weight selector includes both a first selector rod segment that is configured to selectively engage at least a first one of the weight plates, and a second selector rod segment that is configured to selectively engage at least a second, discrete one of the weight plates.