ITEM NAME:13Pcs Er11 Collet Chuck Cnc Spindle Er-11 Collet Lathe Tool Holder From 7Mm M2Y8 13Pcs Er11 Collet Chuck Cnc Spindle Er-11 Collet Lathe Tool Holder From 7Mm M2Y8 Made of high grade specially formulated spring steel,First class 1065 carbon steel For CNC milling Lathe Tool&Work holding Engraving machine. 100% Brand New Model:ER11(13pcs,1mm-7mm) Run-out tolerance 0.01mm(0.0006 inch) Color:silver Material:steel Package Contents: 1* 1mm chuck 1* 1.5mm chuck 1* 2mm chuck 1* 2.5mm chuck 1* 3mm chuck 1* 3.5mm chuck 1* 4mm chuck 1* 4.5mm chuck 1* 5mm chuck 1* 5.5mm chuck 1* 6mm chuck 1* 6.5mm chuck 1* 7mm chuck