1pc ER11 Spring Collet ER11 1 2 3 4 5 6 7 8mm 1/8mm 1/4mm 1/2mm High Precision Chuck For CNC Engraving Machine Lathe Mill Tool

Model: ER11
Precision:<0.012
Material:Spring Steel
Ground Roughness is Ra0.4 Microns, plus overall fine polish
Gripping Range: 1 mm,1.5 mm,2 mm,2.5 mm,3 mm,3.5 mm,4 mm,4.5 mm,5 mm,5.5 mm,6 mm,6.5 mm,7 mm,8mm,1/4",1/8"
Upper Diameter: 12 mm
Bottom Diameter: 8 mm
Height: 20 mm
Suitable For: Boring, milling, drilling, tapping, engraving, CNC, spindle machines, and other processing
T.I.R.: 0.0003" or 5um. In order to make all collets running true, on your side, make sure your machine spindle and chuck holder running true, on my side, I'll make sure all those collets running in tenth.