High quality mt3/4/5 tapping collets chuck sets please notify the thread of collet chuck draw bar. 1, material: 40cr 2, production standard: mt din228 3, place of origin: made in china 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.; the third is the special machineparts on cnc machine tools asclientss' samples or drawings. our company our factory equipment: packaging & shipping 1, package: plastic boxes and also can pack according to your requests. 2, delivery time:sample within 7 days and others 35 days.