Hydraulic hoses are designed or custom-made specifically for use in specific mechanical applications. In most cases hydraulic hoses are designed to be specific sizes, lengths and have custom connectors to work in specific machines. Hydraulic systems have the ability to multiply torque or apply force in a simple way. Mechanical systems would require an intricate system of gears, chains, pulleys and levers, to move machinery at a distance from the engine. Hydraulic systems, however, can transmit force from a force engine to the place where it needs to be in order to do the work simply by stringing hydraulic hoses between the two. Fluids transmit force effectively because they do not compress. The force that is applied at one end of a hydraulic hose travels to the opposite end of the hose with little loss of power. Changes in size of hoses along the way can increase or decrease the force applied at the opposite end.