You are bidding on One ACME 3/8″ 10TPI Single Pass Tap with 4 Flutes Choice of Right or Left handed threads. These are for manual hand tapping. Overall length is roughly 3″ Made with High Speed Steel and are Titanium Nitride coated. They come packaged in a plastic storage holder. Labeled for easier identification. (Note: I also have 3/8″ 12tpi, 7/16″ 10tpi, 1/2″ 10tpi, 5/8″ Tandem, 1/2-10tpi Tandem 3/4″-6 tandem available in the store!) Purchase with confidence that if you have an issue it will be resolved quickly.If you have questions please ask. Now shipping with the Ebay international shipping program. Thank you for viewing my ad and be sure to take a look at the store.