Ryobi One+ 18V Cordless 4-1/2 Inch Angle Grinder P421

Why this is here

Why this product

The Ryobi One+ P421 exemplifies the 'Top Rated Cordless' vibe by offering an accessible entry point into cordless grinding for a wide user base.

Curated by Workshop Notes

About this shop: I Tested The Best Grinders So You Don't Waste Your Money!

This guide is for anyone from the occasional home DIYer needing an affordable, portable option to the seasoned professional demanding high performance and precision for daily use. It addresses the diverse needs of cutting, grinding, and polishing across various materials.

What's included

• 18V ONE+ battery system
• Cordless portability
• 4.5-inch wheel capacity
• Side handle for control
• Tool-free guard adjustment

Where to buy

Links verified June 17, 2026

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