The Faithfull HSS Straight Flute Taps are versatile general-purpose taps for threading blind or through-holes in most materials. Suitable for machine cutting each set contains taper second and bottom taps to accommodate all threading. The taps are made from high-speed steel with a bright finish and conform to ISO529.Size: M8Thread: 1.25Drill Size: 6.9mmPTDFAIHSSTM8