This is a A-170390 Section, Sickle, Coarse, Top Countersunk, 9 TPI PN: 170390Main Description As Following : A-170390 Section, Sickle; Coarse, Top Countersunk, 9 TPI P.N: 170390 Package Of 10. Found in Section & Models : Headers/Platforms/Feeder House > Grain Head Parts, MacDon HEAD, CUTTING PLATFORM: D50, MacDon HEAD, CUTTING PLATFORM: D60, MacDon HEAD, CUTTING PLATFORM: D65, MacDon HEAD, CUTTING PLATFORM: FD70, MacDon HEAD, CUTTING PLATFORM: FD75 Associated Items : New Also This is An Aftermarket Product And : Package Of 10.