FZ1 2009 Handle bar end weight question

does anyone out there know if there is a specific size the threading needs to be for aftermarket handlebars to fit the yamaha FZ1 2009 bar end weights. Ordered OEM bars from partzilla ans USPS is bullsh!++ing with the delivery so at this point I’m just trying to get a set from cycle gear or something and return the OEMs when they arrive when I’m 72 years old.
 
All of the aftermarket bars I have ever used I just used bar ends with the expanding rubber plugs; none were threaded for the OEM style bar ends.
 
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