Bicycles and e-bikes have different types of bicycle brakes for the front wheel. Common variants are disc brakes, rim brakes and drum brakes. With disc brakes, braking occurs by means of a brake handle on the handlebars which presses together to break pads against a disc attached to the hub of the front wheel. With rim brakes, you brake by using a brake handle on the handlebars that presses two brake pads against the braking surface on the rim. With drum brakes, you brake by using a brake handle handlebars that forces the brake shoes out against a rotating drum attached to the front hub. Hydraulic brakes work by forcing hydraulic fluid/brake fluid through a tube from the brake handle and down to the brake mechanism, while mechanical brakes work by means of a wire.