DEWALT DC550KA 18-Volt NiCd Cordless Spiral-Saw with 1/8-Inch and 1/4-Inch Collets Tool-free bit change for fast and easy bit changing without a wrench 26,000 rpm motor provides more cutting power Dust-Sealed Switch protects against dust ingestion for longer switch life Weighs 4-1/2 Pound Included with saw: 1-hour battery charger, two 18-Volt XRP battery Packs, general purpose bit, drywall cutting bit, 1/4-Inch and 1/8-Inch collets, and heavy-duty kit box