If you have John Deere Extended Wear Seed Boots, you will require a longer bolt, because the existing bolts are not long enough. We have 1/4″-20 x 3/4 stainless steel serrated head bolts.
NeedhamAg 1/4-20 Stainless Steel Serrated Flange Bolt For Bonilla Seed Tabs on John Deere 750a Air Seeder
