# RUPES BigFoot LHR21 Mark III Random Orbital Polisher vs Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher: specs and price compared

A sourced, side-by-side comparison of the RUPES BigFoot LHR21 Mark III Random Orbital Polisher (RUPES) and Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher (Bauer) among car polishers. Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher is the cheaper of the two at $99.95.

## Side by side

| Spec | RUPES BigFoot LHR21 Mark III Random Orbital Polisher | Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher |
| --- | --- | --- |
| US price | $490 | $99.95 |
| Brand | RUPES | Bauer |
| Released | 2018-11 | — |
| Orbit throw (mm) | 21 | 20 |
| Motor power | 500 W | 7.5 A |
| Speed range opm | 3,000-4,500 | 2,000-4,600 |
| Backing plate size (in) | 6 in | 6 in |
| Variable speed | Yes | Yes |
| Action type | free-spin dual-action (random orbital, not gear-driven) | random-orbit dual-action (manufacturer-branded 'DA Polisher') |
| Cord length (ft) | 30 | 12.25 |
| Weight (lb) | 5.95 | 5.86 |

## Key differences

- Orbit throw (mm): RUPES BigFoot LHR21 Mark III Random Orbital Polisher 21 vs Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher 20
- Motor power: RUPES BigFoot LHR21 Mark III Random Orbital Polisher 500 W vs Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher 7.5 A
- Speed range opm: RUPES BigFoot LHR21 Mark III Random Orbital Polisher 3,000-4,500 vs Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher 2,000-4,600
- Action type: RUPES BigFoot LHR21 Mark III Random Orbital Polisher free-spin dual-action (random orbital, not gear-driven) vs Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher random-orbit dual-action (manufacturer-branded 'DA Polisher')
- Cord length (ft): RUPES BigFoot LHR21 Mark III Random Orbital Polisher 30 vs Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher 12.25
- Weight (lb): RUPES BigFoot LHR21 Mark III Random Orbital Polisher 5.95 vs Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher 5.86

## Sources

- RUPES BigFoot LHR21 Mark III Random Orbital Polisher: https://www.rupes.com/product/lhr21iii/ (rupes.com, verified 2026-08-01)
- Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher: https://www.harborfreight.com/75-amp-6-in-20-mm-long-throw-random-orbit-da-polisher-56367.html (harborfreight.com, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/car-polishers/rupes-bigfoot-lhr21-mark-iii-vs-bauer-56367-long-throw-da-polisher/
Cite: Per The Front Desk Review, RUPES BigFoot LHR21 Mark III Random Orbital Polisher ($490) vs Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher ($99.95) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/car-polishers/rupes-bigfoot-lhr21-mark-iii-vs-bauer-56367-long-throw-da-polisher/
License: CC BY 4.0.