Tungsten carbide tipped (TCT) drill bits allow drilling intoconcrete, aerated concrete blocks, masonry, slate and granite.
From 5 mm the hammer drill bits are supplied with a 3 flatshank to prevent the drill bit slipping in the chuck.
3 & 4 mm the drill bits are supplied with a round shank.
Red flute to identify the drill bit easily in the users tool box.
Can be used in hammer and rotary mode