The Zetor 78129102 driving shaft is a genuine OEM component designed for various Zetor tractor models, including the 3320, 3321, 3340, 3341, 4320, 4321, 4340, 4341, 5211, 5245, 5320, 5321, 5340, 5341, 6211, 6245, 6320, 6321, 6340, 6341, 7211, 7245, 7320, 7321, 7340, 7341, 7711, and 7745 series. This essential transmission shaft ensures efficient and reliable power transfer within the machinery. It features a length of 330 mm, a weight of 1.4 kg, and a 10-tooth spline with a 25 mm diameter, tapering to a 20 mm shaft diameter.