Agricultural machines, namely, three point linkage machine parts used in off-highway vehicles, three point linkages for attaching equipment to off-highway vehicles; tractor towed harrows; lower links for tractors being machine parts; machine parts, namely, hubs for spline shafts, shaft couplings, machine pins for articulating joints, hooks being three point linkage parts, and yokes being yoke plates; power take off (pto) components for machines, namely, shaft couplings; hydraulic cylinders fo...