These fit Ammco 6900 & 6950 twin cutters found on Ammco 3850, 4000, 4100 & 7000 brake lathes.
Ammco 9872 Negative Rake Carbide Insert Holder for Brake Lathe Drum Cutter
Ammco 7872 Negative Rake Carbide Insert Holder for Brake Lathe Drum Cutter
Ammco 9069146 Negative Rake Carbide Insert (6 Pack)
Ammco 40420 Negative Rake Carbide Bit Hunter BL 300, 500, 505 10 Pack
Ammco 9069142 Negative Rake Carbide Insert (2 Pack)
Shark 062S-6 Carbide Brake Lathe Bits Ammco Style Negative Rake 6 Pack
