Detailed Product Description 17 Piece Set. Tungsten Carbide tip for longer life. Use on concrete, brick and other similar material. Four chisels for chasing out and breaking. Point chisel, 20mm chisel, 40mm chisel, gouge chisel, 5.5 x 110, 6 x 110, 5.5 x 160, 6 x 160, 6.5 x 160, 7 x 160, 7 x 160, 8 x 160, 10 x 160, 14 x 210, 10 x 260, 12 x 260 and 16 x 260mm masonry hammer bits.