The Welger 1251220138 Yarn Guide Complete is an essential component designed for Welger AP series balers, including models AP41, AP45, AP50, AP51, AP52, AP53, AP61, AP63, AP71, AP73, and AP83. This genuine replacement part ensures the correct guidance of baling twine, critical for reliable and efficient knotting operations. Weighing approximately 0.28 kg, it is built to OEM specifications for durability and optimal performance in demanding agricultural conditions.