Bits fit 3/8" square toolholders found on Ammco and most other brake lathes.
Ammco brake lathe positive rake round bits 10 pk
Positive Rake Round Carbide Bit Holders w/ 10pk of Bits for Brake Lathe Ammco
Ammco Positive Rake Carbide Brake Lathe Bits / Inserts 6918
Brake Lathe Positive Rake Round Toolholder Set w/2 Bits
Ammco 40610 Round Positive Rake Carbide Insert 10 Pk
Ammco Brake Lathe Round Tool Holder Set R&L 940630 Positive Rake Bits 940610