Specification:
ER11-A Alloy Steel/ ER11-A Hardened Steel
Hole Diameter: 7mm(0.27")
Outer Diameter: 18mm(0.70")
Height: 13mm(0.51")
The ER11A uses a 14mm thread and a 17mm (11/16) wrench.
Package List:
2 x ER11-A Alloy Steel Collet Nuts
2 x ER11-A Hardened Steel Collet Nuts