Factory-Reconditioned Milwaukee 6148-8 4-1/2 Inch Magnum Sander/Grinder Reconditioned Milwaukee Products have a five-year warranty through the Milwaukee factory or an authorized service center 8.5 amp, 10,000 RPM, AC-DC Spiral bevel gearing for performance and durability All ball and roller bearing construction Tool-free adjustable wheel guard 1-1/4 Inch Stroke, Counter Balanced/Gear Protection Systems Quik-Lok Blade Clamp Two Super Sawzall Blades