Workholding and Toolholding Product Specialists          D&J - Products - Centro P & HP Plus Centro P BT - DIN69871 - HSK High Precision ER Collet Chucks 8 or 5 Micron System Accuracy Precision ER Collet Chucks HPplus with Taper Shank and HSK 3 Micron System Accuracy ER Collets Our range of ER11,16,20,25,32 & 40 collets are supplied to 6 Micron accuracy and ER8,12 & 50 to 10 Micron accuracy, as standard and not expensive. Where tool life is not a consideration we also offer a range of 20 micron accuracy which are less expensive High Precision ER Collets If you require greater accuracy than our standard range use our range of ER11,16,20,25,32 & 40 collets supplied to 3 Micron accuracy Accessories Clamp Nuts - Standard Clamp Nuts - For Seals Seals Wrenches Adjustable Back Stop Screws