6" Non-Vacuum (152mm) Dia. Non-Vacuum Dynorbital Extreme Random Orbital Sander 0.3 hp 12000 RPM 3/16" (5 mm) Dia. Orbit Rear Exhaust Hook-Face w/Speed Regulator Added speed control to adjust the flow of air and RPM of the tool. . EXTREME POWER: New motor design has the highest power-to-weight ratio in the industry, with 0.3 hp at 1.8 lbs. Most consistent speed under load in industry, running at 92% of rated tool speed. New rotor design enhances power with less friction. EXTREME COMFORT: Ergonomic design with integrated comfort platform for more wrist support and overall operator comfort. Soft grip co-molded to rigid composite base housing for maximum comfort and durability. Recessed throttle lever eliminates pinch and pressure points on an operator's palm. EXTREME PERFORMANCE: Premium sanding pad is weight-mated for the lowest vibration levels. Made from the highest quality materials for extreme durability and longevity. American-made from the highest grade materials for long-life and high durability.