Combines have removable heads that are designed for specific crops and the standard header is equipped with a reciprocating cutter bar with a revolving reel with teeth to cause the cut crop to fall into the auger once it is cut. Different headers are used for cutting different crops. The header is usually powered by hydraulics and can be raised, lowered, and angled in different directions. The header can also be removed and pulled behind the harvester lengthwise so it can fit down narrow lanes. IronSearch is your source for new and used header combines including these popular models: John Deere 640FD; John Deere 635F; John Deere 635D and MacDon FD75-40; New Holland 790CP and Shelbourne CVS32. Choose your specific header on IronSearch, your online choice for used and new ag equipment.