The Razer High Speed Cutting System replaces the reciprocating sickle and wobblebox on your header with a continuous motion cutting chain. This chain being able to rotate in both directions.The chain direction and speed are adjustable from the operators cab. It provides for forward speeds in excess of 10 mph., very smooth operation, which drastically reduces shatter loss. This unit also enables larger combines to utilize narrower headers, for ease of transport. If you have any questions, please don't hesitate to contact me. Tom