Product: Er11 Spring Collet Set, 1/8" and 1/4" ER11 Collet Chuck for CNC Engraving Machine & Milling Lathe Tools (2 Pack)
Brand: Yarrkc
Specification:  
Model: ER11 1/8" & ER11 1/4" 
Material: High Grade 65Mn Spring Steel 
Outside diameter: 0.45" (11mm) 
Precision:<0.012 
Height: 0.69" / 0.68" 

Package included: 
2 Pcs CNC ER11 Collet
Material: 65Mn, good elasticity, high precision
Model: ER11 1/8" & ER11 1/4"
Precision: <0.012; Height: 0.69"/ 0.68"; Outside Diameter: 0.45" (11mm)
Built in self-release design and tools will never get stuck in holder
For CNC milling lathe tool & Work holding engraving machine

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