These fit Ammco 6900 & 6950 twin cutters found on Ammco 3850, 4000, 4100 & 7000 brake lathes.
Ammco 8899 Negative Rake Carbide Cutting Bit Holders and Slides for Brake Lathe
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 40420 Negative Rake Carbide Bit Hunter BL 300, 500, 505 10 Pack
NEW Negative Rake Carbide Cutting Bit Holders and Slides for Ammco Brake Lathe