17 piece Masonry and Concrete SDS Drill and Chisel Set: SDS / SDS Plus connection, for use in concrete, brick, block and other masonry applications 12 pieces SDS drill bits, 4- 4.3"-Length bits: 3/16", 1/4", 5/16", 3/8", 4 - 6.3"-Length bits: 1/4", 5/16", 3/8", 1/2", 2 -8.3"-Length bits:5/16", 3/8", 2- 10.2"-Length bits: 1/2", 9/16" 2 Bull points chisels, 5 1/2", 10" 3 Flat chisels, 3/4" x 5/12", 3/4" x 10", 1 5/8" x 10" Comes complete with wood case.