# Quick Change, Boring Tools, Reverse Boring, 0.300" Min Bore dia, Max. Bore Depth: 3/4"

**Manufacturer:** Micro 100  
**MPN:** `QRB-300750X`

The Micro 100 QRB-300750X Quick Change Reverse Boring Tool features a solid carbide tool with an AlTiN coating, allowing for efficient boring from the inside of a part toward its face. It has a minimum bore diameter of 0.300" and a maximum bore depth of 0.750". The tool's split geometry and polished face reduce galling and improve chip evacuation. Its coolant-fed shank design enables efficient cooling.

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Micro 100 |
| Manufacturer name | Micro 100 |
| Manufacturer | Micro 100, Micro 100 Tool Corporation |
| CategoryId | 6031 |
| DimensionUnit | inch |
| GraingerSku | QRB-300750X |
| Extra Product Name | Quick Change, Boring Tools, Reverse Boring, 0.300" Min Bore dia, Max. Bore Depth: 3/4" |
| UPC | None, 728709163931 |
| WeightUnit | lbs |
| extendedLead | 26 |
| extendedQty | -2 |
| height | 0.75 |
| height_Attrib | Max. Bore Depth |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 2.5 |
| length_Attrib | Overall Length |
| moq | 1 |
| MPN | QRB-300750X |
| multiple | 1 |
| qtyInStock | 0 |
| qtyInStockOverride | -2 |
| SKU | G0984779 |
| tierMinQty1 | 1 |
| tierPrice1 | 45.49 |
| url | https://www.zoro.com/micro-100-quick-change-boring-tools-reverse-boring-0300-min-bore-dia-max-bore-depth-34-qrb-300750x/i/G0984779/ |
| width | 0.138 |
| width_Attrib | Groove Width |
| EAN | 728709163931 |
| Part Number | QRB-300750X |
| Model | QRB-300750X |
| Product Group | BISS |
| Overall Length | 2-1/2" |
| Shank Dia | 5/16" |
| Corner Radius | 0.008" |
| Groove Width | 0.1380" |
| Min Bore Dia | 0.3000" |
| Max Bore Depth | 3/4" |
| Neck Dia | 0.1900" |
| Cutting Direction | Right Hand |
| Finish | AlTiN |
| Projection | 0.1100" |
| Package Quantity | 1 |
| ASIN | B00Q8NMHVS |
| AdultProduct | False |
| Amount | 46.75, 48.90 |
| Asin | B00Q8NMHVS |
| Autographed | False |
| Binding | Misc. |
| Brand | Micro 100 |
| Bullet_point | Coolant fed enabled shank design, Designed to bore from the inside, toward the face of the part, Inside corner radius profile, Polished split face for improved edge retention and chip evacuation while |
| Case | 1 |
| Cat | Industrial & Scientific |
| CatId | 16310091 |
| CatTree | 16310091, 16310161, 383598011 |
| ClassificationId | 256257011 |
| Cpsia_cautionary_statement | no_warning_applicable |
| Currency | USD |
| CurrencyCode | USD |
| DisplayName | Boring Bars |
| EANList | 728709163931 |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G0984779 | 45.49 | 1 | None | 1 |

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Structured data: `/python/html6/product/500/55000000/55045000/part_--QRB300750X---Micro100--f0cecc3615.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp