Top best buy Round Threading Dies <br /> <br />1. Drill America DWT40PC-ROUND #4-1/2 Carbon Steel Tap and Die Set with Round Die <br />http://www.amazon.com/gp/product/B00DLE24SS?tag=mydailyn-20 <br />2. Union Butterfield 2510(UNC) High-Speed Steel Round Threading Die, Uncoated (Bright) Finish, 1-1/2 OD, 1/4-20 Thread Size <br />http://www.amazon.com/gp/product/B003JY6KZS?tag=mydailyn-20 <br />3. Union Butterfield 2510(UNC) High-Speed Steel Round Threading Die, Uncoated (Bright) Finish, 1-1/2 OD, 1/4-20 Thread Size <br />http://www.amazon.com/gp/product/B003JY6KZS?tag=mydailyn-20 <br />4. Proxxon 24082 Die Holder for Round Dies Threads M3 to M10 <br />http://www.amazon.com/gp/product/B0016KBMJQ?tag=mydailyn-20 <br />5. Drill America DWT Series Qualtech High-Speed Steel Round Adjustable Threading Die, 1-1/2 Diameter, M12 x 2 Size (Pack of 1) <br />http://www.amazon.com/gp/product/B00CTS9X40?tag=mydailyn-20 <br />6. Drill America DWT Series Qualtech High-Speed Steel Round Adjustable Threading Die, 1-1/2 Diameter, M13 x 1.75 Size (Pack of 1) <br />http://www.amazon.com/gp/product/B00CTSA9NY?tag=mydailyn-20 <br />7. Drill America DWT Series Qualtech High-Speed Steel Round Adjustable Threading Die, 1-1/2 Diameter, M12 x 2 Size (Pack of 1) <br />http://www.amazon.com/gp/product/B00CTS9X40?tag=mydailyn-20 <br />8. Union Butterfield 2510(UNC) High-Speed Steel Round Threading Die, Uncoated (Bright) Finish, 1 OD, #12-24 Thread Size <br />http://www.amazon.com/gp/product/B003JY6L20?tag=mydailyn-20 <br />9. Union Butterfield 2510(UNC) High-Speed Steel Round Threading Die, Uncoated (Bright) Finish, 1 OD, #12-24 Thread Size <br />http://www.amazon.com/gp/product/B003JY6L20?tag=mydailyn-20 <br />10. Union Butterfield 2010(UNF) Carbon Steel Round Threading Die, Uncoated (Bright) Finish, 1.1/2 OD, 5/16-24 Thread Size <br />http://www.amazon.com/gp/product/B003JY6JWM?tag=mydailyn-20",