DEWALT D25404K 1-1/8-Inch VS SDS Rotary Hammer with Chipping Function and Kit Box 8.3 amp motor provides high performance and overload protection Hard-hitting hammer mechanism for fast and efficient penetration Fully sealed gearbox is engineered for long life by keeping grease in and dust out Accepts SDS bits from 5/32-inch to 1-1/8-inch Higher drilling capacity than compact drilling hammers for increased productivity in 1/2-inch and larger applications