1/3PCS 3-12mm 4-12mm 4-20mm HSS Straight Groove Step Drill Bit Set Titanium Coated Wood Metal Hole Cutter Core Drill Bit Set Drills Drivers
1-3pcs-3-12mm-4-12mm-4-20mm-hss-straight-groove-step-drill-bit-set-titanium-coated-wood-metal-hole-cutter-core-drill-bit-set-drills-drivers














Production:



Name: Step drill bit


Finish: Titanium


Type: Step Drill Head


Type: Hexagon Shank


Material: High-speed steel 4241 Surface


Treatment: Titanium coated


Usage :for punch holes through sheet metal, steel plate, aluminum plate, brass or wood




Length:


5 Step Bit: 4-12mm Length: Approx. 6.7cm/ 2.64"


9 Step Bit: 4-20mm Length: Approx. 7.4cm/ 2.91"


15 Step Bit: 4-32mm Length: Approx. 10.2cm/ 4.02"






The 3 Bits Sizes:


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


9 Step Bit: 4-20mm (4,6,8,10,12,14,16,18,20mm)


5 Step Bit: 4-12mm (4,6,8,10,12mm)




Package include:


1x step drill bit or


3x step drill bit


Note:


1.High-speed steel, high quality with good durability for you to use


Professional drill for deburring, chamfering, elliptic hole enlargement Suitable;


2.This drill bit set includes 3 sizes(4-12mm, 4-20mm, 4-32mm), which meet your different needs perfectly.



































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