The solid carbide tip with centring point and optimised flutes offers fast drilling speeds. Suitable for masonry and concrete. TCT tip manufactured to DIN 8039. Kit Contents: 5.5mm & 7mm x 110mm, 6mm, 7mm & 8mm x 160mm. Product Contents: 5.5mm & 7mm x 110mm, 6mm, 7mm & 8mm x 160mm. Country of Origin: China. Ideal for masonry, stone, concrete and brick this mixed SDS plus drill bit set is compatible with SDS-plus drill. Tungsten carbide-tipped for longer life. Suitable for use on masonry and concrete.