Ammco Springs, Locating Screws, & Jam Nuts for 6900 6950 Twin Cutting Head 4000
$44.50
These go on a 6900 or 6950 twin cutting head (the rotor cutting tool). The springs fit on the bottom side and are used to pull the cutting bits in as you retract the feed screw, and the locating screws and jam nuts keep it straight.
