Item Type: Combination Drill Tap Material: High Speed Steel Surface Treatment: Surface Titanium Plating Treatment Metric Specifications: M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5 Imperial Specifications: 1/4-20NC, 12-24NC, 10-24NC, 10-32NC, 8-32NC, 6-32NC Hex Shank Diameter: 1/4in Extension Rod: Length Approx. 60mm / 2.36in, Shank Diameter 1/4in Package List 12 x Titanium Plated Tap 1 x Extension Rod 1 x Plastic Box Confirm the appropriate size before use, and do a good job of safety protection during use 1Spiral Grooves Design: This is tap, which adopts spiral grooves design, and has better chip removal effect, easy to use 2High Speed Steel: Made of high speed steel material, has high hardness, long life, durable, and corrosion resistant 3Application: Can be used for drilling holes in copper, brass, aluminum, metal plates and plastics, and has a wide range of applications 4Basic Specifications: A total of 12 taps, there are 2 different standards (metric, imperial), can be used for tapping 5Titanium Plating Treatment: The surface is treated with titanium plating, which is more wear resistant and prolongs service life