High speed steel hole opener

Product description：

• Special grinding technology and high strength matrix, strong perforation ability, can prevent the tremor when drilling, drilling ability is greatly improved
• When the center drill is drilled by transverse edge grinding, after the center drill penetrates the processed material, the center drill is used as the axis of the drill shaft to ensure the smooth cutting of the edge on the circumference of the drilling body
• Irregular clamping handle is more firm
• Universal shank prevents skid and carries more torque
• The inner teeth are sharp, the vibration is small, the opening is quick balance operation is more stable