Check the listing for details. 1/2" Indexable Boring Bar Set Lathe Round Shank Bars For TCMT Insert 4PCS set. Condition: New. Listed at 53.99 USD. 1/2" Indexable Boring Bar Set Lathe Round Shank Bars For TCMT Insert 4PCS set Made of precision ground, high grade tool steel. Set contains (4) 1/2" diameter (round shank) boring bars: 1 pc- 1/2" diameter boring bar x 7/16" minimum bore x 1-1/4" bore depth x 2-3/4" overall 1 pc- 1/2" diameter boring bar x 7/16" minimum bore x 2-1/8" bore depth x 3-5/8" overall 1 pc- 1/2" diameter boring bar x 1/2" minimum bore x 1-1/2" bore depth x 3" overall 1 pc- 1/2" diameter boring bar x 1/2" minimum bore x 2-1/2" bore depth x 4" overall TCMT 21.51 Carbide inserts included. Replacement inserts are in our store (see link below) Positive rake 90-degree lead. Supplied with wrench Great deals on more boring bars, inserts, and more lathe/mill tooling in the Contact us for custom quotes, quantity discounts, or international shipping options. We pride ourselves on having the best service, fastest shipping, and lowest pricing in the industry! If you need other models, please contact us for customization. I think we can offer a price that satisfies both parties