Hitachi DH22PG 7/8-inch SDS Rotary Hammer  (Discontinued by Manufacturer) Powerful 5.4-amp motor provides fast drilling in common 5/32-inch and 3/16-inch diameters (2) modes of operation for simple selection between drill only and hammer-drilling Compact and lightweight for use in tight spaces or overhead operations Slip clutch to prevent damaged gears Comes with a 1-year limited warranty Powerful 5.4 amp motor 2 modes of operation. Drill only and hammer-drilling. Slip Clutch to prevent damaged gears Idle Strike Restrictor Internal Pressure Adjustment