1 Pcs ER11-M M Type Hardened And Thickened Collet Chuck Wrench, Clamping Nut
It Can Help Hold The Wrench Tightly And Save The Amount Of Work Required.It Is Simple To Operate,When Using a Wrench, You Must First Tighten The Wrench And Hold The End Of The Wrench With Your Hands.Tighten It Clockwise, Loosen It Rotate Counterclockwise.