Milwaukee 6121-30 4-1/2-Inch Small Angle Grinder Trigger Grip, Lock On The product is easy to use The product is durable The product is manufactured in China Overload Protection: Maximizes motor life Electronic Clutch: Extends tool life and prevents bind-up Tool-Free Accessory Change: Easily change "All Accessories" without a wrench Advanced Airflow System: Maximizes airflow and reduces debris ingress, improving motor life and performance Trigger Grip Handle  provides better control, reach and leverage