Tenders for Gem Bids For Machine Tap M6 X 1 Rh, Spiral Fluted. Tin/ticncoated. Hss E To Conforming Din 371., Machine Tapm20 X 1 Rh, Spiral Fluted. Hss E For Tapping Of 35 Hrcto 45 Hrc Steel Material., Machine Tap M4 X 0.7 Rh, Spiral Fluted, Hss E, For Tapping Of 35 Hrc To 45 Hrcsteel Material., Machine Tap M17x1.5 Rh, Spiralfluted, Hss E, For Tapping Of 35 Hrc To 45 Hrc Steelmaterial