7 Packs Center Drill Bits Set, Black Oxide Coating M2 High Speed Steel Center Drill Bits Kit 60 Degree Angle Countersink Bit Tool for Lathe Metalworking Size 1.0 1.5 2.0 2.5 3.0 4.0 5.0 with Case

Price: $16.99 - $11.89
(as of Oct 13,2022 06:08:46 UTC – Details)

 packs of M2 High Speed Steel Center Drill Bits Set are Must-have Countersink Tools for Lathe Metalworking. 
They are incredibly accurate, solid, very useful in drilling starter hole for drilling or tapping in metal working project.

Specifications:
Cutting Angle: 60-Degree Angle
Color: Black
Compatible machines: lathe machines, drill press and most drills
Compatible materials: Steel, Iron, Alum, Brass and Hard materials ranging from 170HB up to 200HB
Function: drilling precise center holes with diameters from 1mm to 5mm. 
Each bit is engraved with the size number.
Package includes: 7 center drill bits.
Sizes: 1.0 1.5 2.0 2.5 3.0 4.0 5.0

How to make the center drill bits work：

1. Fix the work piece from walking

2. use oil or other lubricant to cool the bits

3. stop at 2/3 deep of the tapered section

4. Stop immediately if the drilling sounds wrong

5. Clean the center drill bits apply oil to store it
Package Dimensions ‏ : ‎ 2.68 x 2.52 x 0.67 inches; 3.21 Ounces
Date First Available ‏ : ‎ July 1, 2022
Manufacturer ‏ : ‎ DKITDBIT
ASIN ‏ : ‎ B0B2ZBPG5S