Features:

brand new and high quality
Made of high-quality materials, durable
High strength, high hardness, firm structure and long service life.
High-quality ER chuck block for spindle motor shaft clamping.
Spiral straight thread, more convenient clamping, faster replacement speed and higher clamping force.
The surface is smooth, no scratches, and stable performance.
ER straight rod chuck with long shank and long shank, suitable for deep hole processing
Used for motor extension rod, replaceable drill chuck, perfect match with ER chuck of various straight shank tools
The outer diameter of the rod and other parts of the rod can be eliminated by precision grinding, which can eliminate imbalance and increase the stability of cutting.
Suitable for lathes, drilling machines, boring machines, boring machines, fixtures, drills, and milling cutters.