Black+Decker
Black+Decker RTX-B 3-Speed RTX Rotary Tool
$42.71
Best Rotary Tools · head-to-head
Black+Decker RTX-B 3-Speed RTX Rotary Tool vs Bosch Professional GRO 12V-35 Cordless 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.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Black+Decker RTX-B 3-Speed RTX Rotary Tool |  Bosch Professional GRO 12V-35 Cordless Rotary Tool |
|---|---|---|
| US price | $42.71 | — |
| Brand | Black+Decker | Bosch |
| Released | — | — |
| Power source | corded | cordless |
| Amps or voltage | 2 A / 120 V | 12 V |
| Speed range (rpm) | 12,000 / 24,000 / 30,000 RPM (3 fixed speeds) | 5,000–35,000 RPM |
| Max (rpm) | 30000 | 35000 |
| Variable speed | No | Yes |
| Brushless | No | — |
| Ez change accessories | No | No |
| Included accessories count | 5 | — |
| Release year | — | — |
Sources — Black+Decker RTX-B 3-Speed RTX Rotary Tool: toolboxsupply.com (verified 2026-06-20). Bosch Professional GRO 12V-35 Cordless Rotary Tool: bosch-professional.com (verified 2026-07-10).
What's the difference between the Black+Decker RTX-B 3-Speed RTX Rotary Tool and Bosch Professional GRO 12V-35 Cordless Rotary Tool?
Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.
- Power source: Black+Decker RTX-B 3-Speed RTX Rotary Tool corded vs Bosch Professional GRO 12V-35 Cordless Rotary Tool cordless
- Amps or voltage: Black+Decker RTX-B 3-Speed RTX Rotary Tool 2 A / 120 V vs Bosch Professional GRO 12V-35 Cordless Rotary Tool 12 V
- Speed range (rpm): Black+Decker RTX-B 3-Speed RTX Rotary Tool 12,000 / 24,000 / 30,000 RPM (3 fixed speeds) vs Bosch Professional GRO 12V-35 Cordless Rotary Tool 5,000–35,000 RPM
- Max (rpm): Black+Decker RTX-B 3-Speed RTX Rotary Tool 30000 vs Bosch Professional GRO 12V-35 Cordless Rotary Tool 35000
- Variable speed: Black+Decker RTX-B 3-Speed RTX Rotary Tool false vs Bosch Professional GRO 12V-35 Cordless Rotary Tool true