Material	High Speed Steel
Length	60-150 mm
Hardness	50-60 HRC
Tensile Strength	100-300 MPa
Tolerance	+/-0.025mm

Boring heads are specifically designed to enlarge an existing hole. They hold cutters in position so they can rotate and gradually remove material until the hole is at the desired diameter.

Material	Stainless Steel
Length	80-150 mm
Hardness	50-60 HRC
Packaging Type	Box
Tolerance	-0.007mm to +0.003mm
Tensile Strength	100-300 MPa

Boring heads are specifically designed to enlarge an existing hole. They hold cutters in position so they can rotate and gradually remove material until the hole is at the desired diameter.

Material	Stainless Steel
Packaging Type	Box
Tolerance	-0.007mm to +0.003mm
Diameter	10-25 mm
Tensile Strength	50-150 Mpa

 2 inch boring head, can be fine tuned,durable. High-carbon steel material, hardness and endurance of the surface are improved. MT3-M12 holder has better cleanness