Stainless steel drill chucks high precision threaded or tapered tightly mounts on the tools. Jaw are specially engineered for tight tolerance on drilling. Suitable for super electrical grinders, engraving machines, precision machine lathe & medical equipment. Remarks: 4mm-jt10 can be made from carbon steel for engraving machines. 1. Material: 3cr13 2. Taper mounted or thread mounted. 3. Rang offer from 1mm-16mm 4. Max.10.000 rpm without further balance 5. Precision reach 0.02mm to 0.03mm 6. Separate drill chuck or integrated drill chuck our teli mainlyinkindsofcollets, kindsoftoolholders, bttoolholders, cattoolholders, dattoolholders, nttoolholders, hsktoolholdersseries, boringheadseries, tappingcollets, livecenters, drillchucksseries, andsoon. Product show: company information sishui teli tool co., ltd. Sishui teli tool manufacturing co., ltd locates in sishui economic developing zone.our products can be divided into 3 types: the first is various tooling system for cnc machinetools, includingprecision tool holders, spring collets, rough or precision boring heads and tapping collets;the second is otherstandard machinetool accessories, such as all kinds of live centers, drill chucks, etc.