The Welger 1118220801 knotter needle is a genuine OEM replacement part designed for Welger AP series square balers. This essential component ensures precise and reliable knot formation during the baling process, maintaining optimal machine performance. It is compatible with Welger AP45, AP50, AP51, AP52, AP53, AP61, AP63, AP71, and AP73 baler models. With a length of 1020 mm, width of 250 mm, height of 100 mm, and a weight of 2.50 kg, this needle is built to OEM specifications for durability and a perfect fit.