Application To drill holes on concrete, brick, stone & other hard materials for SDS drill, for SDS Plus drills Specification Package Include: 12x Drill Bits 3x Flat Chisels 2x Bull Point 1x compatible for Case Drill Bits Diameter: 1/4" x 110mm 5/16" x 110mm 3/8" x 110mm 1/4" x 160mm 5/16" x 160mm 3/8" x 160mm 1/2" x 160mm 5/16" x 210mm 3/8" x 210mm 1/2" x 260mm 9/16" x 260mm Bull Point: 10" Point Chisel: 9/16" x 9 13/16" (14x 250mm) Flat Chisel: 3/4" x 10" 1-5/8" x 10 Notice* Professional installation is highly recommended (No Instruction Included) * For any needs please contact us Warranty: one year warranty for any manufacturing defect