high precision CNC Nt Oz Collet Chuck TOOL HOLDER, OZ Nuts and Hook Spanner Wrench. OZ nuts are bearing nuts. Wrenches we also have both, one is Precision Cast Wrenches, the other is normal forging spanners. We prefer the casted spanner which are with better outlook and higher hardness. Oz Collet Chucks are used with DIN 6388 OZ Collets to clamp cutting tools with straigh shanks. DIN6388 OZ Collets are including DIN6388 A OZ collets and DIN6388B OZ collets, the most common one is OZ B type collets. OZ collets are also called EOC Collets, so, if any one who ask for Eoc Collet, it refer to the same collets. 

OZ COLLET CHUCK With NT30 NT40 NT50 Spindle Tool Holder
1.NT OZ Collet Chuck The material: 20CrMnTi
2.NT OZ Collet Chuck The Taper: AT3
3.NT OZ Collet chuck The precision: 0.005mm
4.NT OZ Collet chuck The hardness: 52-58HRC
5.NT OZ Collet chuck Surface: Black
6.NT OZ Collet chuck The standard: DIN2080