Metabo HPT
Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder
$74
Best Angle Grinders · head-to-head
Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only)
A sourced, side-by-side comparison. Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) is cheaper at $49.97. Every spec and price links to its source.
Ryobi
Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only)
$49.97Cheaper
Which is better: the Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder or Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only)?
The Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder wins 1 of the 1 specs we compare head to head; the other wins 0. The Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) is the cheaper at $49.97. Get the Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder for the stronger spec sheet, the Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) to spend less.
See Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder on Amazon Check Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) price
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder | Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) |
|---|---|---|
| US price | $74 | $49.97 |
| Brand | Metabo HPT | Ryobi |
| Released | — | — |
| Disc size (in) | 4.5 in | 4.5 in |
| Power source | corded | cordless |
| Amps or voltage | 6.2 A | 18 V |
| Max (rpm) | 10000 | 6500 |
| Brushless | No | No |
| Switch type | slide | trigger |
| No volt release | — | — |
| Weight (lb) | 4 | 4.8 |
Sources — Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder: metabo-hpt.com (verified 2026-06-20). Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only): ryobitools.com (verified 2026-06-20).
What's the difference between the Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder and Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only)?
Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.
- Power source: Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder corded vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) cordless
- Amps or voltage: Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder 6.2 A vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) 18 V
- Max (rpm): Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder 10000 vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) 6500
- Switch type: Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder slide vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) trigger
- Weight (lb): Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder 4 vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) 4.8
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder
Only one whitelisted tester (Pro Tool Reviews) covers the G12SR4, and it appears in a corded slide-switch lineup overview, not a hands-on lab test (the outlet did not test the tool). PTR frames it as the range's most budget-friendly pick at $39, bundled with five abrasives and a carrying case, and lists the manufacturer specs (980W, 10,000 RPM, 4 lbs). No outlet published tester-measured performance data. (1 sourced review.)
Praised: Range's most budget-friendly pick at $39, bundled with five abrasives and a carrying case.
Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only)
No sourced tester review yet.