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 18-Volt Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder Kit with Battery and Charger, (Non-Retail Packaging, Bulk Packaged) - Amazon.com