Features
- Minimum bore diameter range from 0.286" to 0.314"
- Choose either 95° or 91° entry angle
Set includes
- 4pcs indexable mini boring bars
- 4pcs TiN coated carbide inserts
- 4pcs Torx screws
- 1pc Torx wrench
- 1pc Rose-plastic box

| Item | Model Shank | Dia | L1 | OAL | Enter Angle | Min Bore | Insert | Insert Screw |
| EJ99-2178 | NBN652 | 1/2" | 1" | 4" | 95° | 0.286" | TCMT520 | M2 x 3 |
| NBS652 | 1/2" | 1" | 4" | 91° | 0.286" | TCMT520 | M2 x 3 | |
| NBN653 | 1/2" | 1" | 4" | 95° | 0.314" | TCMT520 | M2 x 4 | |
| NBS653 | 1/2" | 1" | 4" | 91° | 0.314" | TCMT520 | M2 x 4 |
Replacement of inserts is available across the site.
Carbide Inserts, TiN Coated

| Item | Size | I.C. | S | R |
| 2124-1100 | TCMT520 | 5/32" | 1/16" | 0.008" |
Replacement of Screws
| Â Item | Size |
| 0046-0903 | M2 x 3 |
| 0046-0904 | M2 x 4 |
