Pro Grade ER Nut Wrench Set For ER25UM ER32UM ER40UM Collet Chuck Lathe CNC Clamping Nut Heavy Duty Carbon Steel With High Hardness HRC 58 62 Precision Fit And Annular Groove Design For Non Slip

Set of 3 Pro ER Nut Wrenches for ER25/ER32/ER40UM
✔️ Carbon steel body, HRC58-62, precise ER nut fit, non-slip groove

These ER Nut Wrenches are precision hand tools designed to tighten and secure ER25UM, ER32UM, and ER40UM nuts on lathe chucks, milling machines, and CNC setups. They deliver snug fits and durable performance in metalworking workshops.

✅ Fits ER25UM, ER32UM, ER40UM nuts with annular groove for non-slip grip
✅ Medium carbon steel body for high strength and durability
✅ Hardened to HRC58-62 with black finish and blue accents
✅ Pack includes 3 wrenches for common ER sizes in a single set

💡 What is an ER nut wrench used for in machining, and why is a set handy?

It helps secure ER collet nuts quickly and safely on lathes, milling machines, and CNC setups.

• handy for tightening ER collet nuts on lathes and CNCs
• designed for ER25UM, ER32UM, ER40UM sizes with annular groove grip
• hardened carbon steel for durability and long life
• includes 3 wrenches for common ER sizes in one set