Not compatible with SDS Plus & SDS Max. Package includes 6 Pcs 16mm Stone Splitter and 1 Pcs 16*200mm Rotary Hammer Drill. Stone splitter made of high hardness steel, Rotary hammer drill made of tungsten steel alloy,heat treatment process, High hardness, toughnes, versatility, easy to use. Application: This Plug chops Feather Shims can be used to split the hard stone,rock,granite,marble,concrete etc. Attention: drilling keep straight, Hole depth longer than feather, Holes spaced 3" to 4", Feather direction, According to the order beat, The thickness of the stone is usually restricted to three times the length of the chop within range. How to use:First using quarrying dedicated drill holes, remove residual powder of hole.Next upside down the big side .