Features 1、Widely used in drilling, CNC milling machine lathes, thread cutting, grinding, workpiece clamping engraving machine. 2、Innovative designed, small deformation, stable accuracy, more precise coordination. 3、Easy to install and remove, practical accessory fit for milling machine. 4、Smooth surface, no scratches, stable performance. 5、Easy to install and remove, practical accessory fit for milling machine. Specification Features: Material:High Grade 1065 Carbon Steel Condition: Brand New Run‑Out Tolerance:0.015MM(0.0006") Gripping Range:1MM to 7MM (1mm,1.5mm,2mm,2.5mm,3mm,3.5mm,4mm,4.5mm,5mm,5.5mm,6mm,6.5mm,7mm) 100% working condition & 100% customer satisfaction. We've had a customer satisfaction guarantee for a long time, So Just go for it Package include: 13 x ER11 Collets (1mm,1.5mm,2mm,2.5mm,3mm,3.5mm,4mm,4.5mm,5mm,5.5mm,6mm,6.5mm,7mm) Note: 1.The pictures are just for your reference. Please see our description carefulness. Please feel free to contact us for any question and suggestion. 2.Please Check Picture For Details. Package List