# Dremel 4300 Variable Speed Corded Rotary Tool vs Black+Decker RTX-B 3-Speed RTX Rotary Tool: specs and price compared

A sourced, side-by-side comparison of the Dremel 4300 Variable Speed Corded Rotary Tool (Dremel) and Black+Decker RTX-B 3-Speed RTX Rotary Tool (Black+Decker) among rotary tools. Black+Decker RTX-B 3-Speed RTX Rotary Tool is the cheaper of the two at $42.71.

## Side by side

| Spec | Dremel 4300 Variable Speed Corded Rotary Tool | Black+Decker RTX-B 3-Speed RTX Rotary Tool |
| --- | --- | --- |
| US price | $134 | $42.71 |
| Brand | Dremel | Black+Decker |
| Released | 2017 | — |
| Power source | corded | corded |
| Amps or voltage | 1.8 A | 2 A / 120 V |
| Speed range (rpm) | 5,000–35,000 RPM | 12,000 / 24,000 / 30,000 RPM (3 fixed speeds) |
| Max (rpm) | 35000 | 30000 |
| Variable speed | Yes | No |
| Brushless | No | No |
| Ez change accessories | Yes | No |
| Included accessories count | 40 | 5 |

## Key differences

- Amps or voltage: Dremel 4300 Variable Speed Corded Rotary Tool 1.8 A vs Black+Decker RTX-B 3-Speed RTX Rotary Tool 2 A / 120 V
- Speed range (rpm): Dremel 4300 Variable Speed Corded Rotary Tool 5,000–35,000 RPM vs Black+Decker RTX-B 3-Speed RTX Rotary Tool 12,000 / 24,000 / 30,000 RPM (3 fixed speeds)
- Max (rpm): Dremel 4300 Variable Speed Corded Rotary Tool 35000 vs Black+Decker RTX-B 3-Speed RTX Rotary Tool 30000
- Variable speed: Dremel 4300 Variable Speed Corded Rotary Tool Yes vs Black+Decker RTX-B 3-Speed RTX Rotary Tool No
- Ez change accessories: Dremel 4300 Variable Speed Corded Rotary Tool Yes vs Black+Decker RTX-B 3-Speed RTX Rotary Tool No
- Included accessories count: Dremel 4300 Variable Speed Corded Rotary Tool 40 vs Black+Decker RTX-B 3-Speed RTX Rotary Tool 5

## What reviewers say

**Dremel 4300 Variable Speed Corded Rotary Tool** — Only one whitelisted tester, Pro Tool Reviews, covers this exact model, naming the corded Dremel 4300-5/40 its best overall rotary tool for power and flexibility and praising its keyless chuck. The verdict is qualitative with no tester-measured lab figures. The lone knock is bulk. (1 sourced review.)

## Sources

- Dremel 4300 Variable Speed Corded Rotary Tool: https://www.prnewswire.com/news-releases/the-dremel-brand-debuts-their-most-versatile-tool-the-dremel-4300-300401043.html (prnewswire.com, verified 2026-06-20)
- Black+Decker RTX-B 3-Speed RTX Rotary Tool: https://www.toolboxsupply.com/products/black-decker-rtx-b-3-speed-rtx-rotary-tool-kit (toolboxsupply.com, verified 2026-06-20)

Canonical: https://frontdeskreview.com/gear/rotary-tools/dremel-4300-vs-black-decker-rtx-b/
Cite: Per The Front Desk Review, Dremel 4300 Variable Speed Corded Rotary Tool ($134) vs Black+Decker RTX-B 3-Speed RTX Rotary Tool ($42.71) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/rotary-tools/dremel-4300-vs-black-decker-rtx-b/
License: CC BY 4.0.