The Welger 0982250300 Piston Knife is a genuine replacement part designed for Welger AP series square balers. This essential component ensures clean and efficient cutting of hay and straw during the baling process, contributing to consistent bale density and machine reliability. Crafted for durability, it maintains optimal performance in demanding agricultural conditions. Compatible with Welger AP50, AP51, AP52, AP53, AP61, AP63, AP71, AP73, and AP83 baler models.