Explore new and used J&M HS30B Ag Trailers for sale near you on Farm And Plant! Find J&M HS30B Header Trailers you need on Farm And Plant! Find Farm Attachments for your J&M HS30B Ag Trailers. Can't find the exact J&M HS30B Ag Trailers you need? Post a free Want-To-Buy and get notified when it's available.