Spring Steel Collet Chuck Adapter Bits 6 To 4mm 65HRC Hardness 0.94"

Specification:
Material: spring steel
:
Length: 24mm
Outer diameter: 6mm 5.77mm
Inner diameter: 4mm
Precision: 5 microns
Hardness: 65HRC
Feature:
- Made of top spring steel with high elasticity and high wearing quality.
- High hardness: 65HRC, durable

Notice:
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