The C120HA0500 TCT Countersink Hex-Shank Drill Bit is a 5.0 mm diameter, 9 mm depth, tungsten-carbide tipped countersink bit with 1/4? hex shank, engineered for drilling pilot holes and countersinking screws in fibre-cement sheeting or timber. Key features Tungsten Carbide Tipped (TCT) for long-lasting performance in abrasive or demanding materials. Countersink bevels holes to create a smooth edge for flush-fit screw heads. Depth stop allows setting drilling depth to match material thickness (especially useful for thin sheet materials). 1/4? hex shank for compatibility with impact drivers and quick-change adaptors. Common uses Drilling and countersinking screws in thin fibre-cement sheeting (e.g. blue board), timber and similar building materials to allow flush screw installation.
