Next time someone yells “give me a break,” take the opportunity to show a complete system. What is a brake system, anyway? Well, first you need a caliper and a control lever to actuate it.
Next are cables and housing to connect the two. Is that everything? While this is what you get when you buy a bicycle brake system in a box, it is not the complete brake. What is missing? Most lightweight bicycle brakes are technically speaking, disk brakes. Not drum brakes with internally expanding shoes, or coaster brakes with internal clutch mechanisms, or band brakes with straps that tighten on hub mounted drums.