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 EAG2000RS 9-inch Angle Grinder with Rotating Back Handle, 2000 W – Indoostrial
ALL NEW - 18-Volt RYOBI One+ HP 4-1/2" Angle Grinder Review [$119] - YouTube