RUPES
RUPES BigFoot LHR21 Mark III Random Orbital Polisher
$490
Released 2018-11
Best Car Polishers · head-to-head
RUPES BigFoot LHR21 Mark III Random Orbital Polisher vs Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher
A sourced, side-by-side comparison. Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher is cheaper at $99.95. Every spec and price links to its source.
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Bauer
Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher
$99.95Cheaper
Which is better: the RUPES BigFoot LHR21 Mark III Random Orbital Polisher or Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher?
The Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher wins 1 of the 1 specs we compare head to head; the other wins 0. The Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher is the cheaper at $99.95. The Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher both leads on specs and costs less — the straightforward pick.
See RUPES BigFoot LHR21 Mark III Random Orbital Polisher on Amazon See Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher 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 | 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 |
Sources — RUPES BigFoot LHR21 Mark III Random Orbital Polisher: rupes.com (verified 2026-08-01). Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher: harborfreight.com (verified 2026-08-01).
What's the difference between the RUPES BigFoot LHR21 Mark III Random Orbital Polisher and Bauer 7.5 Amp 6 in. 20mm Long-Throw Random Orbit DA Polisher?
Where the two actually differ on the specs we track (6 of 8). Matching specs are omitted.
- 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