Ryobi P421 6500 RPM 4 1/2 Inch 18-Volt One+ Lithium Ion-Powered Angle Grinder (Battery Not Included, Power Tool Only) - Power Angle Grinders - Amazon.com
RYOBI ONE+ 18V Cordless 4-1/2 in. Angle Grinder Kit with 4.0 Ah Battery and Charger PCL445K1 - The Home Depot
Ryobi P423 18V One+ Brushless 4-1/2" 10,400 RPM Grinder and Metal Cutter w/ Adjustable 3-Position Side Handle and Onboard Spanner Wrench (Battery Not Included, Power Tool Only) - Amazon.com
Ryobi HP Tools Need More! Ryobi One+ HP 18-Volt Angle Grinder Review Model PBLAG01 - YouTube
Best Budget Angle Grinder | RYOBI ONE+ HP 18V Brushless 4.5 in - YouTube