Dedicated silicon sandpaper set includes 8 types of interchangeable nylon sanding bits, 7 different grit #180/280/400/600/800/1000/1200, The combination of soft membrane abrasive layer and silicon rubber make the sandpaper conforms sanding better and provides more thorough grinding action. Refill pack available for purchasing. 25 min fully , 80 min battery life, Direct connection of charging module,Can be operated while charging. Upgraded PRO Reciprocating Electric Sander: High-speed 5400 RPM reciprocating electric sander delivers efficient and precise sanding results for various surfaces. Perfect for hobbyists, 3D printing enthusiasts, or professional model makers, this sander ensures your projects achieve a professional, factory-like finish., Weight: 0.71429772888 Pounds, Manufacturer: Prterver