Quality High Speed Steel as you would expect from Presto Tools
Used for cutting internal threads,
Straight Flute full size taps used as machine taps or set of 3,
Hand tap sets for tapping in free cutting steel upto 800N/mm2.
The perfect form threas is generated by a combination of effective pitch diameter,
Major diameter and chamfer length
Presto Tap Set of 3 and Tapping Drill
M3 x 0.5 & 2.5mm Drill Bit
M4 x 0.7 & 3.3mm Drill Bit
M5 x 0.8 & 4.2mm Drill Bit
M6 x 1.0 & 5mm Drill Bit
M7 x 1 & 6mm Drill Bit
M8 x 1.25 & 6.8mm Drill Bit
M10 x 1.5 & 8.5mm Drill Bit
M12 x 1.75 & 10.2mm Drill Bit