Dormer E500 straight flute taps are the only type of taps that can be used by hand, but they may also be used in a machine if required. Extremely versatile, can tap through or blind holes in most materials. When tapping blind holes straight flute taps should be used in sets. The three taps which form a set are known by more than one name. 1. Taper or First tap2. Second or Intermediate tap3. Bottoming, third or plug tap. Metric coarse straight flute taps. Tolerance: Class 2 for 6H FitSurface treatment: BrightMaterial: HSS High Speed SteelChamfer No: 1,2 and 3, Serial no 4 and 5Flute Geometry: Straight Flutes ISO529Select Option 10mm Bottoming10mm Second10mm Taper12mm Bottoming12mm Second12mm Set of 312mm Taper14mm Bottoming14mm Second14mm Set of 314mm Taper16mm Bottoming16mm Second16mm Set of 316mm Taper20mm Second3.5mm Second3.5mm Set of 33.5mm Taper3mm Bottoming3mm Second3mm Set of 33mm Taper4mm Bottoming4mm Second4mm Set of 34mm Taper5mm Bottoming5mm Second5mm Set of 35mm Taper6mm Bottoming6mm Second6mm Set of 36mm Taper8mm Bottoming8mm Second8mm Set of 38mm Taper Add to Basket Quantity