Price:
US$15.69

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It consists of a head (tip section), drill body (edge screw part) and shank (holding portion) composition. Reasonable structure design, smooth brisk drilling, high efficiency, after the drill hole wall is flat and smooth chip evacuation.               

Features:
Original thickening, high hardness. Alloy blade, durable wear resistance.
Sharp edges, smooth holes and no burrs. 
Suitable for drilling holes in wood, thin alloy and thin sheet metal. Well organized in a convenient plastic storage case.
Positioning bit: better positioning and drilling without misalignment.
Thread blade: special design, high hardness, fast cutting, excellent machining performance when cutting workpiece and machining material.
Metal connecting rod: whole through vacuum heat treatment, high hardness and heat resistance
1/4 batch handle: suitable for electric hand drill, percussion drill, bench drill, etc.

Specifications:
Shank type:Hex handle
Cooling type (internal/outer cooling): External cooling
Thread length: 70mm
Rod length: 95mm
Overall length (mm): 165
Blade size: 10-25mm
Blade diameter: 10-25 (mm)
Blade length: 65 (mm)
Maximum depth of cut: 100
Category: Reaming drill
Specifications (diameter * full length): 10/12/16/20/25mm*165mm
Item weight: 439g / 0.97lb
Package size: 220* 100 * 80mm / 8.66* 3.94* 3.15in
Package weight: 510g / 1.12lb

Note:
This new type of drill is self-tapping and the speed should not be too fast.
The colors may have different as the difference display,please understand.
Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering.

Package List:
Drill bits: Diameter of 10mm, 12mm, 16mm, 20mm, 25mm

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