5pcs 18mm indexable boring bar set

1. The set contains 5pcs 18mm shank boring bars as following: 

1) SBJ1808-32L. Boring range: 8-10mm. It use TBGT060104L-W inserts.

2) SBJ1810-40L. Boring range: 10-12mm. It use TBGT060104L-W inserts.

3) SBJ1812-53L. Boring range: 12-16mm.  It use TPGT090204L-W inserts.

4) SBJ1816-68L. Boring range: 16-20mm.  It use TPGT090204L-W inserts.

5) SBJ1820-83L. Boring range: 20-25mm.  It use TPGT110304L-W inserts.

2. It use with replaceable inserts. So that it can use long life.