Uxcell a15052300ux0179 M2.5 X 0.45mm Straight Flute Cobalt Spiral Tap 45mm Long Pitch: 0.45mm; Product Name: Spiral Tap; Package Content: 1 x Spiral Tap Material: HSS; Total Length: 45 mm/1.8" Flute Diameter: 2.5mm/0.1"(M2.5); Flute Length: 15mm/0.6"