The Welger 033630 is a genuine OEM locking spring specifically designed for a wide range of Welger square and round balers. This critical component ensures the proper function of locking mechanisms within the baler, contributing to reliable operation. It is compatible with Welger AP series balers including AP41, AP42, AP45, AP50, AP51, AP52, AP61, AP63, AP71, AP73, AP83, and RP series balers such as RP12, RP15, RP200, RP200 MASTER, RP220, RP235, RP245, RP320, RP435, RP445, RP520, RP535, RP545. Technical specifications include a total length of 95 mm, an outer diameter of 16 mm, and a wire diameter of 2.5 mm.