The 7/8-inch SDS Rotary Hammers are available as a Pistol Grip (5366-21), as a D-Handle (5368-21) or as a D-Handle Kit (5368-22). All models are designed for durability and reliable performance in demanding applications, including drilling holes in concrete, masonry and stone. These units feature a 20-percent higher amp rating of 7.2 amps, a solid bit capacity of 7/8 inch, and a thin wall core bit of 2 inches. In addition, they have a 1.8-foot pound of blow energy and speeds of 0-1,100 rpm and 0-5,000 bpm.