# Micro 100

**Manufacturer:** Micro 100  
**MPN:** `QRB-2001250`

The Micro 100 QRB-2001250 Quick Change Reverse Boring Tool is a solid carbide tool designed for boring from the inside of a part towards its face. It features a polished split face for improved edge retention and chip evacuation, and a split geometry for rigidity. The tool has a minimum bore diameter of 0.200" and a maximum bore depth of 0.500". It measures 3" in overall length and has a 0.250" shank diameter.

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Micro 100 |
| Manufacturer name | Micro 100 |
| Manufacturer | Micro 100, Micro 100 Tool Corporation |
| DimensionUnit | inch |
| GraingerSku | 15U138 |
| Extra Product Name | Micro 100 |
| UPC | 728709163726 |
| UnitOfMeasure | EA |
| Weight | 0.04, 0.022046001167587297, 0.0220460011675872978142162 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | US |
| extendedLead | 5 |
| height | 0.44 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 2.75 |
| moq | 1 |
| MPN | QRB-2001250 |
| multiple | 1 |
| qtyInStock | 0 |
| qtyInStockOverride | 0 |
| qtySource | qtyInStockOverride |
| SKU | G8274865 |
| tierMinQty1 | 1 |
| tierPrice1 | 38.13 |
| url | https://www.zoro.com/micro-100-boring-bar-2-12-in-l-carbide-qrb-2001250/i/G8274865/ |
| width | 0.44 |
| EAN | 728709163726 |
| Part Number | QRB-2001250 |
| Model | QRB-2001250 |
| Product Group | BISS |
| Item | Boring Bar |
| Shank Dia | 1/4 in |
| Overall Length | 2-1/2 in |
| Bore Dia | .200" |
| Bore Depth | 1.25" |
| Cutting Direction | Right Hand |
| Material | C2 Micrograin Carbide, Solid Carbide |
| Shank Material | Carbide |
| Angle | .090" |
| Application | For Reverse Boring |
| Radius | 0.0080 in |
| Finish | Uncoated |
| Projection | 0.0900 in |
| Overhang | 1.8530 in |
| Compatible with Product Type | Micro-Quik Tool Holder |
| Cutting Application | Reverse Boring |
| Offset Point | 0.0750 in |
| Boring Bar Type | Reverse Boring |
| Series | QRB |
| Min Bore Dia | 0.2000 in |
| Measurement System | Fractional Inch |
| Max Bore Depth | 1-1/4 in |
| Finish - Machining | Bright (Uncoated) |
| Features | Coolant Fed Enabled Shank Design;Inside Corner Radius Profile;Split Geometry |
| Center to Cutting Tip | 0.0750 in |
| Groove Width | 0.1130" |
| Corner Radius | 0.008" |
| Neck Dia | 0.1100" |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G8274865 | 38.13 | 1 | None | 1 |
| Grainger | 15U138 |  |  | None | 1 |
| Raptor Supplies | AA7CYD | 62.057619 | 1 | None | 1 |
| sustainablesupply.com | C1444240 | 53.53 | 1 | None | 1 |
| simsupply.com | ZO-G8274865 | 55.89 | 1 | 22 | 1 |

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Structured data: `/python/html6/product/500/252500000/252912000/part_--QRB2001250---Micro100--2fbe11f7b6.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp