Cable crossovers, unlike regular cable machines, work quite differently and are mostly used to work the chest muscles. What muscles in the chest they work is different depending on the exercise the user is performing.
The cable crossover machine is usually a set of cable pulley machines that are placed opposite each other enabling the user to stand in between them. The shoulder joint is the one that does all the moving when using the cable crossover machine.
Doing regular/standard crossovers, the machine pulleys are usually placed at shoulder-level or high level, and one stretches out their hands and grabs the D-handle on each side and pulls their hands towards each other.
At the end of the movement, the user has their hands crossed over each other, forming an X. They then go back to their normal position, with the hands spread apart and raised; that being one rep.
In the standard crossover exercises, the main muscles in the chest are exercised, the sternal heads in the pectoralis major muscles, the muscles near the collarbone, and the muscles in front of the shoulders are also exercised.
The upper arm muscles and forearm muscles are used to stabilize the movement and as a result they are strengthened. A high-level pulley system targets muscles in the lower section of the sternal pecs and a medium pulley system works muscles in the pectoral region.