Spiral Flute M20X2.5Mm Threading Machine [Spiral Flute M20X2.5Mm Threading Machine Taps. Specification: Iso-529 Or Is- 6175, Part-Iii Material: Hsse Or Hsse-Pm Size: Overall Length: 100 To 112Mm, Shank Dia: 14Mm, Helix Angle: 15 Or 35 Degrees Square Width: 11.2Mm, Coating: Ticn Or Tialn Or Alcrn Coating.]