Specification
Material: High Speed Steel 6542
Hex Shank: 6.35mm (1/4").
Standard Metric Thread Size: M3, M4, M5, M6, M8, M10.
Length: 53mm, 53mm, 56mm, 56mm, 58mm, 59mm
Dia: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm
Pitch: 0.5mm, 0.7mm, 0.8mm, 1.0mm, 1.25mm, 1.5mm
(The value of Length, Dia & Pitch corresponds to the Standard Metric Thread Size.)
Package includes: 6Pcs Drill Tap Combination Bit Set (Each size 1pcs)

Features
★HIGH QUALITY: Combination drill tap bit is made of High Speed Steel 6542. Strong hardness and good durability. Special surface treatment, which greatly improves the cutting performance of the drill, is more wear-resistant and prolongs the service life.
★SPECIAL DESIGN: The taps are designed with spiral splines and the chip reteying process would be better; A tapered end on hex shank can prevent excessive knocks; Back tapered beyond tap to prevent thread damage from over-drilling.
★TIME SAVING: 6 different sizes of drill bit can satisfy your demand and help you to solve the problem; Complete hole drilling, tapping, deburring and countersinking in one operation and greatly save processing steps and time costs, improve working efficiency.
★QUICK CHANGE: 1/4" (6.35mm) hex shank fits into tools more easily and securely, Fits in three-jaw chucks, like hand / power drills, bench drills, tapping machines.
★WIDELY USAGES: Suitable for processing soft metals with a thickness of less than 5 mm, such as aluminum alloys, tin alloys, zinc alloys, etc. Also an ideal choice for thin wood panels, plastics, acrylic sheets, etc. (NOT suitable for 304 stainless steel or high hardness metals!)

Note:
1. Manual measuring, please allow 1 ~ 3mm error, thank you.
2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We ensure the style is the same as shown in the picture.