The 1821699M5 collar is a genuine OEM component designed for use in various agricultural machinery, including McCormick, Massey Ferguson, and Landini tractors. This essential collar ensures proper fitment and function within the machine's assembly, contributing to reliable operation. With dimensions of 10mm length, 10mm width, 10mm height, and a weight of 0.01kg, it is a direct replacement part, ensuring compatibility with a wide range of models across multiple series.