3pcs Step Titanium Cone Drill Hole Bit Set Tool Triangular

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Description:

The ladder of its unique structure, a bit can open a variety of specifications of aperture;

Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken;

Deburring, chamfering, elliptic hole enlargement, twist drill, the function of them was unable, but it is possible;

The usage of tools: drill, bench drill. Work while water cooling, can effectively extend the service life of drill bit;

Great for drilling holes in sheet metal when you don't want to sort through a collection of drill bits;

Specification:

Material: High-speed steel 4241

Surface Treatment: Titanium Coated

Dimension ( L x W x H ): 80 x 40 x 20mm/ 3.15 x 1.57 x 0.78''

Size for Each Piece:

4-12mm: 4, 6, 8, 10, 12mm

4-20mm: 4, 6, 8, 10, 12, 14, 16, 18, 20mm

3-12mm: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12mm

Package Includes:

3 Pieces HSS Steel Drill Bit Set

HSS Drill Bit;Cone Drill Bit;Step Drill Bit;Hole;4-20mm Drill Bit;Triangular Drill Bits