Half Inch Round Shank Boring Bar Set With 90 Degree Indexable Carbide Inserts TCMT21.51 TCMT110204 Four Piece Pro Grade Kit For Precise Milling And Drilling

High-precision half-inch boring bar set for milling
✔️ Four-piece pro-grade boring bar kit with indexable carbide inserts

This boring bar set is designed for precision internal boring, hole reaming, and copying on lathes and boring machines. It’s ideal for semi-finishing existing holes and maintaining consistent bore diameters. The bar holders are steel with a coating, while the carbide inserts are tin-coated for moisture and rust resistance, delivering long service life in tough shop environments.

✅ Boring depth: 1-1/4 to 2-1/2 in (31.8-63.5 mm)
✅ Min bore: 7/16 to 1/2 in (11.1-12.7 mm)
✅ Overall length: 1-3/4 to 4 in (44-101.6 mm)
✅ Inserts carbide, tin-coated for moisture and rust resistance; indexable for reuse
✅ Chip breaker reduces long stringer chips; allows positive or negative rake
✅ Four-piece kit includes inserts TCMT21.51 and TCMT110204

💡 What is a handy boring bar set used for in metalworking? This handy tool helps you achieve precise internal diameters and smooth finishes on boring operations.
- internal bore finishing with tight tolerances
- precise reaming and copying of hole profiles
- compatible with lathe and boring machines

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