# Bosch GWS13-50 5 in. Corded Angle Grinder vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only): specs and price compared

A sourced, side-by-side comparison of the Bosch GWS13-50 5 in. Corded Angle Grinder (Bosch) and Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) (Ryobi) among angle grinders. Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) is the cheaper of the two at $49.97.

## Side by side

| Spec | Bosch GWS13-50 5 in. Corded Angle Grinder | Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) |
| --- | --- | --- |
| US price | $159 | $49.97 |
| Brand | Bosch | Ryobi |
| Disc size (in) | 5 in | 4.5 in |
| Power source | corded | cordless |
| Amps or voltage | 13 A | 18 V |
| Max (rpm) | 11500 | 6500 |
| Brushless | No | No |
| Switch type | slide | trigger |
| No volt release | Yes | — |
| Weight (lb) | 5.3 | 4.8 |

## Key differences

- Disc size (in): Bosch GWS13-50 5 in. Corded Angle Grinder 5 in vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) 4.5 in
- Power source: Bosch GWS13-50 5 in. Corded Angle Grinder corded vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) cordless
- Amps or voltage: Bosch GWS13-50 5 in. Corded Angle Grinder 13 A vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) 18 V
- Max (rpm): Bosch GWS13-50 5 in. Corded Angle Grinder 11500 vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) 6500
- Switch type: Bosch GWS13-50 5 in. Corded Angle Grinder slide vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) trigger
- Weight (lb): Bosch GWS13-50 5 in. Corded Angle Grinder 5.3 vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) 4.8

## Sources

- Bosch GWS13-50 5 in. Corded Angle Grinder: https://www.boschtools.com/us/en/products/gws13-50-060179G012 (boschtools.com, verified 2026-06-20)
- Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only): https://www.ryobitools.com/products/33287139576 (ryobitools.com, verified 2026-06-20)

Canonical: https://frontdeskreview.com/gear/angle-grinders/bosch-gws13-50-vs-ryobi-p421/
Cite: Per The Front Desk Review, Bosch GWS13-50 5 in. Corded Angle Grinder ($159) vs Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) ($49.97) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/angle-grinders/bosch-gws13-50-vs-ryobi-p421/
License: CC BY 4.0.