PRODUCT CODES DESCRIPTION Accessories for collets chucks  ER16 . C.SET05 . SC4 . WB DIN 69871 QTCW.01 . 035.027 ISO 60 COLLETS DESIGN and SIZE Collet variants SET variants ERxx - ER collets / size P - precision WP - wooden plate OZxx - OZ collets / size S - sealed WB - wooden box HKSxx - HKS collets for high SC4 - sealed with performance chucks / size 4 coolant channels MA S 403 BT HCxx  - HC collets / size QTCR.xx - quick-change tap collets reduction sleeves / size QTCC.xx - quick-change tap collets INTERNAL SHAPE and SIZE with clutch /size C - for tools with cylindrical shaft QTCW.xx - quick-change tap collets DIN 2080 xx - shaft diameter without clutch / size SETxx - SET of collets with quantity number T - for taps with square drive xxx.xxx - cylindrical tap diameter / square size (in tenths of millimeter) SETxx - SET of collets with quantity number HSK-A VDI MORSE N . ER16 . HX25 . SR . SN TYPE OF ACCESSORY FOR COLLETS VARIANTS N.ERxx - nuts for collet chucks ER M - mini nuts N.OZxx  - nuts for collet chucks OZ HXxx - hexagonal nuts / size SR - for sealing rings N.HKSxx - nuts for collet chucks HKS SN - with spray nozzles SR.ER xx - sealing rings for collets - ER SR.OZxx - sealing rings for collets – OZ K.xxxx - wrenches (keys) for clamping nuts / type and size K.xxxx.M - wrenches (keys) for MINI clamping nuts / type and size E.HKS - extractor for HKS collets 276