DeWalt
DeWalt DWE402 4-1/2 in. Small Angle Grinder
$117
Best Angle Grinders · head-to-head
DeWalt DWE402 4-1/2 in. Small 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 DeWalt DWE402 4-1/2 in. Small Angle Grinder or Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only)?
The DeWalt DWE402 4-1/2 in. Small 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 DeWalt DWE402 4-1/2 in. Small 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 DeWalt DWE402 4-1/2 in. Small 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 | DeWalt DWE402 4-1/2 in. Small Angle Grinder | Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) |
|---|---|---|
| US price | $117 | $49.97 |
| Brand | DeWalt | Ryobi |
| Released | — | — |
| Disc size (in) | 4.5 in | 4.5 in |
| Power source | corded | cordless |
| Amps or voltage | 11 A | 18 V |
| Max (rpm) | 11000 | 6500 |
| Brushless | No | No |
| Switch type | paddle | trigger |
| No volt release | — | — |
| Weight (lb) | 4.6 | 4.8 |
Sources — DeWalt DWE402 4-1/2 in. Small Angle Grinder: dewalt.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 DeWalt DWE402 4-1/2 in. Small 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: DeWalt DWE402 4-1/2 in. Small Angle Grinder corded vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) cordless
- Amps or voltage: DeWalt DWE402 4-1/2 in. Small Angle Grinder 11 A vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) 18 V
- Max (rpm): DeWalt DWE402 4-1/2 in. Small Angle Grinder 11000 vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) 6500
- Switch type: DeWalt DWE402 4-1/2 in. Small Angle Grinder paddle vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) trigger
- Weight (lb): DeWalt DWE402 4-1/2 in. Small Angle Grinder 4.6 vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) 4.8