Hexagonal Spiral Fluted Step Drill Bits Hexagonal Handle Precision Twist Drill Bits for Wood Metal Wall Jewelry,Default NO5148

Features:

Material: The drill bits set is made of HSS high speed steel with the hardness of HRC58~65 which is hard for long time usages.

Functions: The 4-32mm/4-20mm/4-12mm step drill set has the function of deburring, chamfering, open hole expansion.

Applicable Equipment: The step drill bits set is suitable for lithium electric drill, electric hand drill, bench drill, etc.

Wide Application: The drill bits set is suitable for stainless steel, carbon steel, iron plate, aluminum plate, plastic plate, etc.

Universal Set: The special serrated edge can be stitched horizontally after drilling. The universal round shank makes it suitable for all kinds of equipment. 

Notice:

1.Actual color may be slightly different from the image due to different monitor and light effect

2.Please allow 1-3cm deviation due to manual measurement

Description:

Material: High Speed Steel 4241

Size:

4-32mm（4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm）

4-20mm（4,6,8,10,12,14,16,18,20mm)

4-12mm（4,5,6,7,8,9,10,11,12mm)

Surface Treatment: Titanium Plated

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