Dotco 10LF Series Right Angle Grinders, 300 Series Collet feature aluminum housing for high durability for the toughest of jobs. Dotco 10LF Series Right Angle Grinders, 300 Series Collet are available in front and rear exhaust models. Dotco 10LF Series Right Angle Grinders, 300 Series Collet are well suited for any industrial grinding application.