Hook Spanner Type A Wrench

Hook spanner-type UM wrench

Product Description:

Name: ER nut wrench

Model: ER11A 16A 20A

Material:45# steel

Hardness: HRC42-44

Usage: CNC Collet Chuck Wrench Spanner for ER Type Shank

Features: Suitable for nut rotation of ER-type shank, arbor, and extension rod.

Made of high-quality high carbon steel, heat treated, high hardness.

Type A: Made of selected cast iron, heat treatment, hardness 44-48HRC, clamping nut directly tightened, high rigidity.

Type B: Select hardened steel plate, high hardness and durability. It is suitable for dismantling the nuts of ER-type tool holders,

tool holders and extension rods of engraving machines, electric spindles, and spindle motors.

Choose the appropriate model according to different needs.