Best Angle Grinders · Ryobi · Updated June 2026
Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only): specs and price (2026)
Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) has a US price of $59 (Approximate current retail; discontinued, often found ~$29.99 (factory blemished) at Direct Tools Outlet). Below is its full, sourced spec sheet — every value links to the source and the date we captured it.
Specifications
| Price (US) | $59 Approximate current retail; discontinued, often found ~$29.99 (factory blemished) at Direct Tools Outlet |
|---|---|
| Brand | Ryobi |
| Released | — |
| disc size in | 4.5 in |
| power source | cordless |
| amps or voltage | 18 V |
| max rpm | 6500 |
| brushless | No |
| switch type | trigger |
| no volt release | — |
| weight lb | 4.8 |
Source: ryobitools.com (verified 2026-06-20) · corroborated by amazon.com. 4.5 in disc, 18V, 6,500 RPM, 4.8 lbs confirmed across Ryobi page and Amazon. Switch corrected paddle->trigger: documented as an underside trigger switch with top lock-off (Vehicle Service Pros / retailer specs), not a paddle. Brushed motor (brushless false). Listed discontinued on Ryobi.com.
Frequently asked questions
How much does the Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) cost?
The Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) has a US price of $59 (Approximate current retail; discontinued, often found ~$29.99 (factory blemished) at Direct Tools Outlet), as of 2026-06-20.
What are the Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only)'s key specs?
Ryobi P421 18V ONE+ 4-1/2 in. Cordless Angle Grinder (Tool Only) (Ryobi): disc size in 4.5 in, power source cordless, amps or voltage 18 V, max rpm 6500, brushless No. Full sourced spec sheet verified 2026-06-20.
How it compares
Compare with
Step up
- Metabo HPT G12SR4 4-1/2 in. 6.2 A Slide Switch Corded Angle Grinder $74
- Makita GA4530 4-1/2 in. Corded Angle Grinder $89
- Milwaukee 6130-33 7.0 A 4-1/2 in. Small Angle Grinder $89
- Bosch 1375A 4-1/2 in. 6 A Corded Angle Grinder $98
- Ridgid R86040B 18V X4 4-1/2 in. Cordless Angle Grinder (Tool Only) $99
- DeWalt DWE402 4-1/2 in. Small Angle Grinder $117