Thermal Pad: Thermally conductive sheets that aid in heat dissipation.
Graphics Card Cooler: Integrated cooling systems (either with fans or ready-made liquid cooling) that replace the factory cooling of the GPU for lower temperatures and less noise.
Liquid Coolant: Special fluids (often with anti-corrosive and anti-algae properties) used exclusively in custom water cooling systems. Available in various colors or clear.
Fittings: They are used for connecting the pipes of the system.