Body Length: 50mm, contain the nut length is 55mmShaft Hole: 14mm (-0.02mm) when installing need heating expansionModel: ER20AShank Diameter: 14mmTotal length: 50mmClamping range: 1-13mmFeatures:- ER straight rod type collet extension handle, the handle body is relatively long, suitable for deep hole processing.- Can reduce the use of tools, reduce costs, improve efficiency.- The outer diameter of the rod and other parts of the rod can be eliminated by precision grinding,which can eliminate the unbalance and increase the stability of the cutting.Package Included:1pcs ER20A-14mm Collect Holder