Extra Long 90mm Depth Forstner Bit Woodworking Drill Bit Set Boring Hole Saw Cutter Carbide Tip 16mm-35mm

Extra Long Design
Extra long design for Max.90mm depth hole drilling.

YG8 Tungsten Carbide Tip
YG8 Tungsten Carbide also known as ISO K30 Tungsten Carbide.
Which density is about 14.5-14.9 g/cm3. The hardness of it is about 89HRA.The bending strength of it is 1500σbb/MPa and the the impact toughness is about 2.5J/cm2.
The tungsten carbide tipped drill bit head is harder, tougher, and more resistant to extreme loads, which is specially designed to cut through hole cleanly in end grain and thin stock, great for boring concealed hinges and door locks.

Curve Desgin
In design with curve, the head is good at removing the debris and working efficiently.

Please Note:
1.When drilling holes, forstner drill bit is made only in the clockwise direction, not reversible, and the speeds from low to high is a gradual process.
2.Please grind the tool nose and tips to avoid ageing and damage when breaking; or it will cause a steep decrease in accuracy and quality for drilling holes after tips break.

Warning:
*Following safety instrution provided by manufacturer of the power tool!
*Always wear eyes protection!
*Examine the bit before use for cracks or chips.Do not use damaged or dull bits!

Specification:
Product Name: Forstner Bit
Tip Material:Tungsten Carbide Tip
Tip Hardness:HRA.89
Shank Material:Carbon Steel Body
Cutting Diameter:16mm,18mm,19mm,20mm,22mm,25mm,28mm,30mm,32mm,35mm
Drilling Depth: Max.90mm
Shank Size:as the picture show
Overall Length:as the picture show

Package:
5pcs =16,20,25,30,35mm(each size 1pcs)
10Pcs=16mm,18mm,19mm,20mm,22mm,25mm,28mm,30mm,32mm,35mm(each size 1pcs)

Features：
1. Forstner Bit drill clean holes in soft and hard wood.
2. Two spurs and centering point to give the perfect solution to repeated, clean and accurate hole cutting time after time.
3. The sharp center spur accurately locates the center of your hole.
4. Use to drill precise flat bottom holes with no chipping in any thickness of soft wood.
5. For drilling holes in any direction and making arched openings. For drilling partially overlapped flat bottom holes for easy mortising.
6. Should be use with power drilling machine, here is not included.