This is a A-AH116104 Sensor, Magnetic Pickup PN: AH116104Main Description As Following : A-AH116104 Sensor, Magnetic Pickup PN: AH116104 Found in Section & Models : Hay Tool Parts > Baler Parts, John Deere BALER, ROUND: 458, John Deere BALER, ROUND: 458S, John Deere BALER, ROUND: 458STD, John Deere BALER, ROUND: 468, John Deere BALER, ROUND: 468S, John Deere BALER, ROUND: 558, John Deere BALER, ROUND: 565, John Deere BALER, ROUND: 568, John Deere BALER, ROUND: 570, John Deere BALER, ROUND: 572, John Deere BALER, ROUND: 575, John Deere BALER, ROUND: 578, John Deere BALER, ROUND: 580, John Deere BALER, ROUND: 582, John Deere BALER, ROUND: 590, John Deere BALER, ROUND: 592, John Deere BALER, ROUND: 644, John Deere BALER, ROUND: 678, John Deere BALER, ROUND: 744, John Deere BALER, ROUND: 842 Associated Items : New Also This is An Aftermarket Product And : Overall Length: 6.50" Thread: 3/4"-16 UNF