VOLKEL - M12 x 1.75mm - Green Spiral Point TwinBox are also known as 'bull nose' , 'gun nose' or 'chip driver'. Spiral point taps are perfect for machine tapping of through or blind holes where there is enough clearance beyond the threaded section to accomodate the swarf. Within this set you will receive a machine tap and a twist drill.  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: Steel, unalloyed and low alloyed, short-chipping non abrasive material up to 1000N\/mm ² non abrasive material, short-chipping Iron, malleable cast Brass, long chipping Bronze, long chipping Copper Aluminium-alloys, long-chipping Zinc alloys Magnesium Alloys Plastics, thermoplastics 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 - M12 x 1.75mm - Green Spiral Point TwinBox