Needham Ag NA 50 L Extended Wear Seed Boots replace John Deere part number AN280317 (extended wear L with carbide tiles) or N280447 (standard wear L).
Needham Ag NA 50 R Extended Wear Seed Boots are made from the same chrome alloy material that the John Deere 90 Series extended wear boots are made from, and they both last around 2.5 times longer than the John Deere standard wear seed boots. So when the installation/removal time for standard wear seed boots is factored in, most growers buy the extended wear seed boots.
Needham Ag Seed Boots mount directly to the 50 series opener arms with no drilling or modifications required. Each Boot is supplied with the Needham Bolt and Bush kit, (seed boot already pre drilled for this)
The seed boot then pivots towards and away from the disc on the seed boot bushings, which are pulled tight against the opener arm. No drilling is required to take care of most of the up/down play common in most used openers.
As this is not a common model, my stocks maybe limited, if you require a large number to recondition a machine let me know to allow satisfactory delivery time