Each collet is well packed in separate protective container with label, moreover, each collect is mark with size, so it's easy to distinguish them.
Specification:
Type: ER11
ER11 Spring Collet made of high grade spring steel
The accuracy can be controlled within 0.0005".
Collet size: 1mm,1.5mm,2mm,2.5mm,3mm,3.5mm,4mm,4.5 mm,5 mm,5.5 mm,6 mm,6.5 mm,7mm,1/4",1/8"
Package include:
15pcs ER11 Collets