# Boring Bar, Reverse Boring, Bright (Uncoated), 0.0623 in, Micro-Quik Tool Holder

**Manufacturer:** Micro 100  
**MPN:** `QRB-156750`

The Micro 100 QRB-156750 is a Quick Change Reverse Boring Tool with a solid carbide construction. It features a minimum bore diameter of 0.156" (3.96 mm) and a maximum bore depth of 0.750" (19.1 mm). The tool's head length is 0.075" (1.90 mm) and its projection is 0.060" (1.52 mm). The tool radius is 0.005" (0.13 mm) and the shank diameter is 0.1875" (4.8 mm). This tool is designed for reverse boring and is suitable for use with coolant.

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Micro 100 |
| Manufacturer name | Micro 100 |
| Manufacturer | Micro 100, Micro 100 Tool Corporation |
| CategoryId | 6031 |
| CategoryIdL1 | 2 |
| CategoryIdL2 | 6049 |
| CategoryIdL3 | 6031 |
| CategoryL1 | Tools & Machining |
| CategoryL2 | Cutting Tools |
| CategoryL3 | Indexable Tools |
| CategoryL4 | Indexable Boring Bars |
| DimensionUnit | inch |
| GTIN | 728709163627 |
| GraingerSku | 15U128 |
| UPC | 728709163627 |
| UnitOfMeasure | EA |
| Weight | 0.02, 0.022046001167587297, 0.0220460011675872978142162 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | US |
| height | 0.25 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 2.25 |
| moq | 1 |
| MPN | QRB-156750 |
| multiple | 1 |
| qtyInStock | 1 |
| qtyInStockOverride | 1 |
| qtySource | qtyInStockOverride |
| SKU | G7915765 |
| snippet | Boring Bar, Reverse Boring, Bright (Uncoated), 0.0623 in, Micro-Quik Tool Holder |
| tierMinQty1 | 1 |
| tierPrice1 | 30.85 |
| url | https://www.zoro.com/micro-100-boring-bar-2-in-l-carbide-qrb-156750/i/G7915765/ |
| width | 0.25 |
| EAN | 728709163627 |
| Part Number | QRB-156750 |
| Model | QRB-156750 |
| Product Group | BISS |
| Shank Dia | 3/16 in |
| Overall Length | 2 in |
| Bore Dia | .156" |
| Bore Depth | .750" |
| Radius | 0.0050 in |
| Max Bore Depth | 3/4 in |
| Min Bore Dia | 5/32 in |
| Groove Width | 0.0750" |
| Corner Radius | 0.005" |
| Neck Dia | 0.0960" |
| Item | Boring Bar |
| Cutting Direction | Right Hand |
| Material | C2 Micrograin Carbide, Carbide |
| Shank Material | Carbide |
| Application | For Reverse Boring |
| Finish | Uncoated |
| Angle | .060" |
| Projection | 0.0600 in |
| Overhang | 1.0900 in |
| Series | QRB |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G7915765 | 30.85 | 1 | 1 | 1 |
| Grainger | 15U128 |  |  | None | 1 |
| Walmart | 50501651 | 29.35 | 1 | None | 1 |
| Raptor Supplies | AA7CXT | 48.9734505 | 1 | None | 1 |
| sustainablesupply.com | C1444230 | 42.42 | 1 | None | 1 |

---
Structured data: `/python/html6/product/500/89000000/89154500/part_--QRB156750---Micro100--728303bf2e.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp