---
product_id: 18350105
title: "TPBN Boring Bars and Sets TPBN12-3, Min Bore: .845\", OAL: 10\", Shank D: .750\", Center Line F: .422\", Use with TPG_ Insert: 322"
brand: "dorian"
price: "NT$4757"
currency: TWD
in_stock: true
url: https://www.desertcart.tw/products/18350105-tpbn-boring-bars-and-sets-tpbn12-3-min-bore-845
store_origin: TW
region: Taiwan
---

# TPBN Boring Bars and Sets TPBN12-3, Min Bore: .845", OAL: 10", Shank D: .750", Center Line F: .422", Use with TPG_ Insert: 322

**Brand:** dorian
**Price:** NT$4757
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** TPBN Boring Bars and Sets TPBN12-3, Min Bore: .845", OAL: 10", Shank D: .750", Center Line F: .422", Use with TPG_ Insert: 322 by dorian
- **How much does it cost?** NT$4757 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/18350105-tpbn-boring-bars-and-sets-tpbn12-3-min-bore-845)

## Best For

- dorian enthusiasts

## Why This Product

- Trusted dorian brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

For 11 degree positive triangle TPGH or TPGB inserts   * From Roughing to Finishing, Square Shoulders to Through Bores   * Small hole Capacity- to a minimum of .430   * High Performance- Positive rake for fast material removal, as will as finishing   * Rigidity-Bar made of heat treated, precision ground alloy steel   * Insert Locking- The insert is securely held with the Torx screw to reduce tool slipping   * Chip Control- Advanced precision chip clearance allows for maximum boring capacity   * Inserts - TiN coated with added chip breaker

## Images

![TPBN Boring Bars and Sets TPBN12-3, Min Bore: .845", OAL: 10", Shank D: .750", Center Line F: .422", Use with TPG_ Insert: 322 - Image 1](http://ecx.images-amazon.com/images/I/41PFW7Zv9UL.jpg)

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**Shop now:** [https://www.desertcart.tw/products/18350105-tpbn-boring-bars-and-sets-tpbn12-3-min-bore-845](https://www.desertcart.tw/products/18350105-tpbn-boring-bars-and-sets-tpbn12-3-min-bore-845)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-10-03*