Straight Shank

● Anti-bending, and anti-vibration ER extension rod center through-hole design is conducive to water cooling, effectively reducing vibration and increasing vibration resistance. (Through hole without thread)

● Improve life. The advanced vacuum quenching furnace can achieve carbon, and oxygen co-permeation, increase the hardness of the tool shaft, and enhance the life.

● High efficiency. The shaft is longer, and deep hole processing is used, which can reduce the use of long tools, reduce costs and improve efficiency.

● Fine-tooth tight fitting M-type ER extension rod is a fine-tooth tight fitting, suitable for finishing