# Milwaukee M18 QUIK-LOK Brushless 15 in String Trimmer

> Milwaukee M18 QUIK-LOK Brushless 15 in String Trimmer (3115-20ST) is a trimmer from Milwaukee M18. It is labelled 18 V, runs on one battery, weighs 10 lb, cuts a 15 in path, has a brushless motor, and has a 3-year limited warranty. Lowest in-stock price on file: $229.00 at Ohio Power Tool (checked Oct 29, 2026).

- Line: [Milwaukee M18](https://powertoolgrid.com/lines/milwaukee-m18/)
- Category: [String trimmers](https://powertoolgrid.com/compare/trimmer/)
- Status: current
- Data confidence: confirmed (last verified 2026-10-29; [what this means](https://powertoolgrid.com/how-we-compare/#confidence))
- Page: https://powertoolgrid.com/products/milwaukee-m18-3115-20st/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model number | 3115-20ST | [milwaukeetool.com](https://www.milwaukeetool.com/products/details/m18-quik-lok-brushless-15-string-trimmer/3115-20st) (brand, page, 2026-10-29) |
| Voltage on the label | 18 V | [milwaukeetool.com](https://www.milwaukeetool.com/products/details/m18-quik-lok-brushless-15-string-trimmer/3115-20st) (brand, page, 2026-10-29) |
| Batteries it takes at once | 1 | [milwaukeetool.com](https://www.milwaukeetool.com/products/details/m18-quik-lok-brushless-15-string-trimmer/3115-20st) (brand, page, 2026-10-29) |
| Weight | 10 lb | [milwaukeetool.com](https://www.milwaukeetool.com/products/details/m18-quik-lok-brushless-15-string-trimmer/3115-20st) (brand, page, 2026-10-29) |
| Cutting width | 15 in | [milwaukeetool.com](https://www.milwaukeetool.com/products/details/m18-quik-lok-brushless-15-string-trimmer/3115-20st) (brand, page, 2026-10-29) |
| Brushless motor | yes | [milwaukeetool.com](https://www.milwaukeetool.com/products/details/m18-quik-lok-brushless-15-string-trimmer/3115-20st) (brand, page, 2026-10-29) |
| Warranty | 3 yr | [milwaukeetool.com](https://www.milwaukeetool.com/products/details/m18-quik-lok-brushless-15-string-trimmer/3115-20st) (brand, page, 2026-10-29) |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| Ohio Power Tool | $229.00 | in stock | 2026-10-29 | [View at Ohio Power Tool](https://www.ohiopowertool.com/milwaukee-3115-20st) |
| Tool Nut | $229.00 | in stock | 2026-10-11 | [View at Tool Nut](https://www.toolnut.com/products/milwaukee-3115-20st-m18-quik-lok-brushless-15-in-string-trimmer-tool-only) |

Prices are re-checked weekly; a date more than a month old means the store could not be re-read.

## The same tool on other platforms

Same category, different line:

- [BLACK+DECKER 40V MAX 13 in 2-in-1 String Trimmer/Edger with POWERCOMMAND](https://powertoolgrid.com/products/black-decker-40v-max-lst136/) — $89.00
- [BLACK+DECKER 40V MAX String Trimmer and Edger](https://powertoolgrid.com/products/black-decker-40v-max-lst140c/)
- [Craftsman V60 15 in Brushless WEEDWACKER String Trimmer](https://powertoolgrid.com/products/craftsman-v60-cmcst960/)
- [Craftsman V20 13 in Brushless WEEDWACKER String Trimmer with QUICKWIND](https://powertoolgrid.com/products/craftsman-v20-cmcst920/)
- [Craftsman V20 String Trimmer (CMCST901B)](https://powertoolgrid.com/products/craftsman-v20-cmcst901b/)
- [Craftsman V20 10 in WEEDWACKER String Trimmer and Edger](https://powertoolgrid.com/products/craftsman-v20-cmcst915b/)
- [Craftsman V20 13 in WEEDWACKER String Trimmer/Edger](https://powertoolgrid.com/products/craftsman-v20-cmcst910b/)
- [DeWalt 60V MAX FLEXVOLT 17 in Brushless Attachment Capable String Trimmer](https://powertoolgrid.com/products/dewalt-60v-max-flexvolt-17in-trimmer/) — $99.00


---
PowerToolGrid lists battery yard tools from every brand side by side, with a source for every spec. [How we compare](https://powertoolgrid.com/how-we-compare/). Data as of 2026-10-29.