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wood boring tool, Low price and high quality auger bit, Supreum tequnique and selected material, Different drill's size availabe - details see: https://www.machineto.com/sds-drill-adaptor-for-building-10145874

As a new patant cutting tools,automatic wood working drill bits have showed up and performed like your best choice for drilling woods.Contrast to transitional drill,it has several advantages,such as follows:

1)Easier to cut:Once the tip of the drill has touched the point,it will drill by itself till the end.

2)Longer to use:It is made of 65# high quality steel with a seiko technique,that it reaches a leading level in the life test of drilling hardwood.

3)Faster to drill:The efficiency is 6 times as much as that of common drills bits.

*For various wood drilling at 6times faster than standard flat bits.

*Full screw tip for ease of use and pull through.

*Cutting Spurs for clean holes with minimal 'break out'.

*Tri-flute Design for faster chip ejection.

*Tapered Flute for less binding and eas of use.

*Full Length Heat Treat for extra durability.

*1/4"Quick Change Shank for quick change adapter and connector system.

*The color in the spiral flute can be upon customer's special requests to be different.

1) Designed and manufactured to meet the need for efficient drilling and long service life

2) The drill bits are precision machined from high quality material,ensuring highly accurate concentricity

3) Accurate flute spiral design gives clear and efficient drilling performance

4) A wide range of models for choice

5) Popular items are in stock for quick delivery

Bit Diameter:	3/8''~1-1/2''
Bit Material:	High Carbon Steel(65#)
Drill Bit Type:	Spade
Drilling Depth (Inches):	3.5~16.5
Length (Inches):	4.5~17.5
Shank Diameter (Inches):	0.25/0.4375

PLS CONTACT US FOR MORE INFORMATION OF THIS wood boring tool,THANKS