WA-5000 is the Olympic 3hp Motor, Motor Brake and Gear Reducer Assembly Kit for the Balemaster Balers needle and twister assembly. These parts will fit all Balemaster Balers. There is 2 of these per baler. 1 for to control the needles in/out and 1 to control the twisting and cutting of the wire. If you have any questions about the part please do not hesitate to call and speak to one of our parts experts at (844) 302-4881.