Dremel
Dremel 4300 Variable Speed Corded Rotary Tool
$134
Released 2017
Best Rotary Tools · head-to-head
Dremel 4300 Variable Speed Corded Rotary Tool vs Black+Decker RTX-B 3-Speed RTX Rotary Tool
A sourced, side-by-side comparison. Black+Decker RTX-B 3-Speed RTX Rotary Tool is cheaper at $42.71. Every spec and price links to its source.
Black+Decker
Black+Decker RTX-B 3-Speed RTX Rotary Tool
$42.71Cheaper
Which is better: the Dremel 4300 Variable Speed Corded Rotary Tool or Black+Decker RTX-B 3-Speed RTX Rotary Tool?
On the specs we track, they're closely matched. The Black+Decker RTX-B 3-Speed RTX Rotary Tool is the cheaper at $42.71.
See Dremel 4300 Variable Speed Corded Rotary Tool on Amazon See Black+Decker RTX-B 3-Speed RTX Rotary Tool on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| 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 |
| Release year | 2017 | — |
Sources — Dremel 4300 Variable Speed Corded Rotary Tool: prnewswire.com (verified 2026-06-20). Black+Decker RTX-B 3-Speed RTX Rotary Tool: toolboxsupply.com (verified 2026-06-20).
What's the difference between the Dremel 4300 Variable Speed Corded Rotary Tool and Black+Decker RTX-B 3-Speed RTX Rotary Tool?
Where the two actually differ on the specs we track (6 of 8). Matching specs are omitted.
- 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 true vs Black+Decker RTX-B 3-Speed RTX Rotary Tool false
- Ez change accessories: Dremel 4300 Variable Speed Corded Rotary Tool true vs Black+Decker RTX-B 3-Speed RTX Rotary Tool false
- 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
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
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.)
Praised: Named best overall rotary tool for power and flexibility across a 5,000-35,000 RPM range; Keyless chuck makes swapping bits fast and tool-free; Comprehensive 40-piece accessory kit with cases and attachment collars.
Flagged: Some crafters and DIYers may find the tool slightly bulky.
Black+Decker RTX-B 3-Speed RTX Rotary Tool
No sourced tester review yet.