Detailed Product Description 20 Piece Set. Manufactured for precision and durability. Tungsten Carbide-tipped for long life with spiral flute for fast waste removal. Use on concrete, brick and other similar materials. 1 each of: 5 x 110, 6 x 110, 8 x 110, 12 x 160, 8 x 210, 10 x 210, 12 x 210, 14 x 210, 16 x 250, 14 x 260, 10 x 450, 12 x 450, 18 x 450 and 20 x 450mm. 2 each of: 6 x 160, 8 x 160, ...