Shimano Canti-Brake Lever
Shimano's standard short-pull flat bar levers. Compatible with cantilever, center-pull and side-pull brakes. They'll also work with (some) disc brakes, but not with linear-pull (V) brakes. These levers are an easy match for mountain bike bars (22.2mm clamp), but they work equally well with swept-back town bars.
Available in matte silver or black. Complete with a set of cables, housing, and various hardware.