6pcs HSS Metric Drill Tap Combination Bit Set Metric Drill +Tap Long Silver

Description:

--High Speed Steel - Made of high quality 4341 HSS for durability; --Suitable for drilling and tapping in aluminum, brass, copper, plastic, wood, steel, etc.
--Three Functions in One Bit – Drill, tap and countersink in a single pass to save your labor and precious time; The point is self-centering and eliminates the need for center drilling or center punching
--Hex Shank - Quick-change 1/4inch (6.35mm) hex shank with SAE sizes engraved on the tap drills for easy recognition.
--Spiral Flute - Wide flutes carry the chips out of the hole. These combination tap and drill bits can be used on multi-spindle heads with reversing mechanisms for tapping in most materials.

Specification:

Material: HSS 4341
Shank: 1/4inch (6.35mm) hex shank
Color: Golden, Silver (Optional)
Size: M3x0.5mm, M4x0.7mm, M5x0.8mm, M6x1mm, M8x1.25mm, M10x1.5mm

Package Includes:

6 x Compound Tap Drill Bits

Note:

It is highly recommended that the combination drill and tap bits are used on a tapping machine.
If you apply an electric hand drilling machine to do the tapping job, please pay attention to your operating, because excessive shaking and tilting may affect the result and even break the bit.