What parts make up the abs system in a 1996 chevy k1500 truck?

I have some spare parts and want to sell them but I don't know what they are.What parts make up the abs system in a 1996 chevy k1500 truck?
Parts of the ABS system , DRAC - digital ratio adapter circuit, Speed Sensor - located in the transmission on (2WD) and in the transfer of (4WD), RWAL control module - rear wheel antilock, Accumulator - stores hydraulic fluid under pressure, Buffer - electronic device converts analog signals to digital signals, Three-way Valve - a hydraulic control valve with three valve funtions in one valve body, Master cylinder - the liquid-filled reservoir in the hydraulic brake system where hydraulic pressure is developed when brake pedalo is applied.