4" = 100 mm for better reach and easy access to restricted areas; Composite grip to reduce cold air transmission to operators; Spindle lock system for easier wheel changing; 11 position adjustable swivel guard – 126° adjustable for better operator protection & greater visibility of cutting operations; Safety throttle lever to prevent accidental start up; Rear exhaust; 1 HP motor & 14000 rpm; High quality steel for internal gears; Cutting disc size : 4’’ / 100 mm - (1/16" X 3/8" ) (1/8" X 3/8" ); 360° swivel air inlet