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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
5.5 Amp Corded 4-1/2" Angle Grinder - RYOBI Tools
Ryobi R18AG-0 Angle Grinder 4 17/32in 18V Only Body Without Battery | eBay
Ryobi One+ 18 Volt Li Lithium Ion 4 1/2 Inch Angle Grinder - Walmart.com