John Deere round baler pickup tine questions.

Those of you familiar with Deere round balers, please educate me a little about pickup tines.  How long has the Mega Square tine been in existance?  I’m thinking it came partway through the 7 series?  What baler models does the Mega Square fit on?  Also I’m wondering what tines the Deere silage balers like the 582 are using?

 

Thanks!

John Deere round baler pickup tine questions.