The Welger 1121215103 is a genuine OEM insert designed for use in various Welger AP series square balers, including models AP400, AP450, AP500, AP530, AP600, AP61, AP63, AP71, AP73, AP83, and AP830. This essential component ensures proper operation within the baling mechanism. It is also compatible with Massey Ferguson balers such as MF 120, MF 124, MF 128, MF 183, MF 184, MF 186, MF 187, and MF 190. Measuring 95 mm in length, 51 mm in width, and 51 mm in height, with a weight of 0.12 kg, this insert is a direct replacement for original parts.