VOLKEL - M3 x 0.5mm - Blue Spiral Flute 39° Taps are used to produce a thread near the bottom of a blind hole and therefore have a very short lead. Spiral flute taps work better on materials which form long, stringy swarf as opposed to chips as the right hand spiral cut of the spiral flute forces the the swarf away from the cutting teeth and out of the hole. These taps have been manufactured by VÖLKEL, with 100 years of experience in manufacturing screw taps, VÖLKEL has become one of the worldwide leading suppliers for threading tools.  Recommended Materials: non abrasive material up to 1200N\/mm ² steel, heat resistant, short-chipping steel, cementation and heat treatable, short-chipping steel, tool steel up to 1200N\/mm ² Stainless steel, short-chipping Iron, spheroidal graphite Brass, short chipping Bronze, short chipping Aluminium Alloys, short chipping Magnesium Alloys Titanium, short-chipping This is not a stock item therefore please allow 1-3 working days for dispatch. As this is not kept as a stock item, this is non-returnable & non-refundable. VOLKEL - M3 x 0.5mm - Blue Spiral Flute 39° Taps